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Preprint ARTICLE | doi:10.20944/preprints201812.0226.v1

The Effect of Heat Treatments on the Fatigue Strength of H13 Hot Work Tool Steel

Ruhi Yeşildal

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Fatigue, heat treatment, hot-work tool steel

Online: 18 December 2018 (16:37:32 CET)

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Preprint REVIEW | doi:10.20944/preprints201801.0166.v1

Hybrid Carbon-based Clathrates for Energy Storage

Kwai S. Chan

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: carbon clathrates; hybrid carbon-silicon clathrates; hybrid carbon-nitrogen clathrates; electrode materials; hydrogen storage materials; energy storage materials; hard materials

Online: 18 January 2018 (05:08:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints201610.0126.v1

Comments about Rietveld Analysis and Tolerance Factor: Y Doped BaTiO₃

I. A. Lira-Hernández, F. R. Barrientos-Hernández, M. Pérez-Labra, A. M. García-Mercado, J. A. Romero-Serrano

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: A. Ceramics; A. Oxides; C. X-ray diffraction; D. Crystal structure; D. Microstructure

Online: 28 October 2016 (08:09:48 CEST)

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Preprint REVIEW | doi:10.3390/sci1010031

LC-NMR for Natural Products Analysis: A Journey from an Academic Curiosity to a Robust Analytical Tool

Tesfay Gebretsadik, Wolfgang Linert, Madhu Thomas, Tarekegn Berhanu, Russell Frew

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: separation technique; spectroscopic technique; hyphenated techniques; LC-NMR; natural products

Online: 14 June 2019 (00:00:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201608.0216.v1

Thermal Conductivity of Polymer Composites Filled with Nanofillers

Raj Kiran

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: polymer nanocomposites; thermal conductivity; finite element analysis; ABAQUS

Online: 27 August 2016 (09:57:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201608.0128.v1

Synthesis of Polyaniline coated Graphene Oxide @ SrTiO3 Nanocube Nanocomposites for Enhanced Removal of Carcinogenic Dyes from Aqueous Solution

Syed Shahabuddin, Norazilawati Muhamad Sarih, Muhammad Afzal Kamboh, Hamid Rashidi Nodeh, Sharifah Mohamad

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: graphene oxide; polyaniline; nanocomposites; adsorbent; methylene blue; methyl orange

Online: 11 August 2016 (11:29:12 CEST)

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Preprint REVIEW | doi:10.20944/preprints202112.0438.v1

X-Ray Diffraction Techniques for Mineral Characterization: A Review for Engineers of the Fundamentals, Applications, and Research Directions

Asif Ali, Yi Wai Chiang, Rafael M. Santos

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: X-ray diffraction; Mineral characterization; Crystal structure; Bragg’s law; Lattice parameters; Crystallography; Unit cell

Online: 27 December 2021 (15:53:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0019.v1

The BCC/B2 Morphologies in AlxNiCoFeCr High-Entropy Alloys

Yue Ma, Beibei Jiang, Chunling Li, Qing Wang, Chuang Dong, Peter K Liaw, Fen Xu, Lixian Sun

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: high-entropy alloys; Al-Ni-Co-Fe-Cr alloys; microstructure; precipitation morphology; mechanical property

Online: 4 January 2017 (10:30:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints201703.0231.v1

China's Copper Demand Forecasting Based on System Dynamics Model

Jianbo Yang, Xin Li, Qunyi Liu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: copper resources; demand forecasting; system dynamics model; sustainability development

Online: 31 March 2017 (10:50:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201610.0099.v1

Band Gap Tuning in 2D Layered Materials by Angular Rotation

Javier Polanco-González, Jesús Alfredo Carranco-Rodríguez, José Luis Enríquez-Carrejo, Pierre Giovanni Mani-González, José Manuel Domínguez-Esquivel, Manuel Ramos

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Moiré patterns; MoS2; Graphene; WS2; WSe2; HRTEM

Online: 24 October 2016 (05:03:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201710.0090.v1

Influence of the Salt Bath Agitation and Austempering Temperature on the Microstructure of Austempered Ductile Iron

Nikša Čatipović, Dražen Živković, Zvonimir Dadić, Marin Viceić

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: austempered ductile iron; austempering parameters; microstructure; mechanical properties; salt bath agitation

Online: 13 October 2017 (15:44:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0036.v1

Degradation of Methylene Blue Dye in the Presence of Visible Light Using SiO₂@α-Fe₂O₃ Nanocomposites Deposited on SnS₂ Flowers

Sridharan Balu, Kasimayan Uma, Guan-Ting Pan, Thomas C.-K. Yang, Sayee Kannan Ramaraj

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: photocatalyst; flower-like SnS2; nanocomposites; visible light; methylene blue

Online: 3 April 2018 (10:53:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0091.v1

A Breakthrough in Water Purification Using an Oligodynamic Metal and Moringa Oleifera Seed

Alakaparampil Joseph Varkey

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: water purification, oligodynamic metal, moringa oleifera seed, copper

Online: 12 March 2018 (15:20:37 CET)

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Preprint REVIEW | doi:10.20944/preprints202111.0271.v1

Review On Progress of 7xxx Series Aluminum Alloy Materials

Yuxin Dai, Liangming Yan, Jianpeng Hao

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: 7xxx superhard aluminum; Heat treatment technological; Alloy microstructure; Future direction

Online: 15 November 2021 (19:14:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints201802.0180.v1

Organic Solvent Free Process to Fabricate High Performance Silicon and Graphite Composite Anode

Haiqing Xiao, Tianyue Zheng, Gao Liu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: lithium-ion batteries, water-based binders; styrene-butadiene rubber (SBR); carboxymethyl cellulose (CMC); silicon; graphite; anode

Online: 27 February 2018 (11:07:11 CET)

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Preprint COMMUNICATION | doi:10.20944/preprints201703.0022.v1

Ultrathin Six-Band Polarization-Insensitive Terahertz Perfect Metamaterial Absorber Based on a Cross-Cave Patch Resonator

Yong Zhi Cheng, Mu Lin Huang, Hao Ran Chen, Zhen Zhong Guo, Xue Song Mao, Rong Zhou Gong

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: perfect metamaterial absorber; terahertz; six-band; cave-cross patch resonator

Online: 3 March 2017 (08:48:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints201609.0101.v1

Microstructural Evolution, Thermodynamics and Kinetics of Mo-Tm₂O₃ Powder Mixtures during Ball Milling

Yong Luo, Guang Ran, Nanjun Chen, Qiang Shen, Yaoli Zhang

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: neutron absorber; Mo-based composites; ball milling; microstructure; thulium oxide

Online: 27 September 2016 (10:45:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201612.0133.v1

MoS₂ Nanosheets Encapsulated in Carbon Nanofibers as Binder-free Anode for Superior Lithium Storage

Yakai Deng, Liang Zhan, Yanli Wang, Shubin Yang

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: MoS2; carbon nanofibers; electrospinning; anode material

Online: 28 December 2016 (10:49:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0025.v1

Effect of SLM Process Parameters on the Quality of Al Alloy Parts; Part I: Powder Characterization, Density, Surface Roughness, and Dimensional Accuracy

Ahmed H. Maamoun, Yi F. Xue, Mohamed A. Elbestawi, Stephen C. Veldhuis

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: additive manufacturing; selective laser melting; AlSi10Mg; Al6061; SLM process parameters; powder characterization; density, surface topology; dimensional accuracy

Online: 2 November 2018 (06:19:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0063.v1

Crystal Structure and Physical Properties of HfB4 via First-Principles Calculations

Gangtai Zhang, Rui Gao, Yaru Zhao, Tingting Bai, Yanfei Hu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: HfB4; structure prediction; superhard material; anisotropic properties

Online: 12 January 2017 (10:57:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints201609.0064.v1

Effects of Coupling Agents on the Structure and Electrical Properties of PZT-Poly(vinylidene fluoride) Composites

Rui Li, Liu Zhang, Zhiliang Shi, Jianzhong Pei

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: PZT-PVDF; coupling agents; dielectric properties; piezoelectric properties

Online: 19 September 2016 (09:42:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201703.0233.v1

Optimization Simulation of the Light Aircraft’s Cockpit Made of Carbon Fiber Reinforced Composites

Pu-Woei Chen, Chia-Hung Liu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: light aircraft; crashworthiness; topology optimization; composites materials; finite element analysis

Online: 31 March 2017 (11:13:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201905.0305.v1

Influence of Aluminum and Silicon as Alloying Elements on Formation of Intermetallic Phase, Microstructure and Wear Resistance of Gray Cast Iron

Ehsan Sanatizadeh, Sourav Das, Amir Kordijazi

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Gray cast iron, Wear resistance, Intermetallic phase, SEM, Hardness

Online: 27 May 2019 (09:49:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201703.0201.v1

Effective Electrons Transfer Pathway of the Ternary TiO₂/RGO/Ag Nanocomposite with Enhanced Photocatalytic Activity under Visible Light

Hongwei Tian, Chenxing Wan, Xin Xue, Xiaoying Hu, Xiaoyi Wang

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: mesoporous TiO2; reduced graphene oxide; Ag nanoparticles; photocatalytic activity; visible light irradiation

Online: 27 March 2017 (12:01:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201701.0002.v1

Simple Metal and Binary Alloy Phases Based on the fcc Structure: Electronic Origin of Distortions, Superlattices and Vacancies

Valentina F. Degtyareva, Nataliya S. Afonikova

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: crystal structure; Hume-Rothery phases; structure stability

Online: 2 January 2017 (10:42:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints201708.0062.v3

The Measurement of the Surface Energy of Solids by Sessile Drop Accelerometry

Alfredo Calvimontes

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: surface energy; interfacial energy; surface tension; wetting model; wetting thermodynamics; sessile drop shape; microgravity

Online: 26 October 2017 (10:20:58 CEST)

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Preprint REVIEW | doi:10.20944/preprints202006.0132.v1

A Brief Review of Materials and Designs for Homemade Masks to Protect Against COVID-19

Jago Strong-Wright

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: COVID-19; SARS-CoV-2; masks materials; pandemic

Online: 11 June 2020 (11:44:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201702.0094.v1

A Study of Polycrystalline Silicon Damage Features Based on Nanosecond Pulse Laser Irradiation with Different Wavelength Effects

Jiangmin Xu, Tengfei Zhang, Aixin Feng, Zhenchun Han

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: laser wavelength; polysilicon; laser damage; thermal shock

Online: 27 February 2017 (06:56:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints201803.0055.v1

Performance of Clay, SiO₂, Ca(OH)₂and CaCO₃ - Polymeric Nanocomposites for Conservation and Preservation of Limestone Artworks

Mohammad Ateeq Aldoasri, Sawsan Darwish, Mahmoud Adam, Nagib Elmarzugi, Sayed Ahmed

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Polymeric nanocomposites; limestone artworks; cultural heritage conservation; consolidation; colorimetric measurements.

Online: 7 March 2018 (13:50:06 CET)

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Environmental deterioration factors are constantly increasing, causing unwanted aesthetic changes to stone artworks due to exposure to various physical and chemical deterioration factors. Inorganic nanoparticle-filled polymer composites have extended their multiple functionalities to various applications, including cultural heritage conservation. Therefore, this study has examined the effects of clay, SiO2, Ca(OH)2 and CaCO3 nanomaterials in the enhancement of the physicomechanical properties of limestone monuments, the aim of the present work being to evaluate comparatively the effectiveness of nanoparticles as consolidation and protection material for limestone artworks. The nanoparticles were added to an acrylic-based copolymer (polyethylmethacrylate (EMA)/methylacrylate (MA) (70/30), in order to improve its physiochemical and mechanical properties, and produced a significant improvement in the ability of the polymers to consolidate and protect the stone. The synthesis process of nanoparticles/polymer nanocomposite has been prepared by an in situ emulsion polymerization system. The nanocomposites contained poly (EMA/MA) with a solid content of 3% [poly (EMA/MA)] in the absence and presence of 5% nanoparticles (0.15 g nanoparticles). Samples were subjected to artificial aging by relative humidity/temperature and acid/salt crystallization weathering to show the optimum conditions of durability and the effectiveness of the nano-mixture in improving the physical and mechanical properties of the stone material. To ensure that the treatment had no negative effects on the physical characteristics of the limestone, the properties of the treated limestone samples were evaluated comparatively before and after artificial aging by the conduct of microstructural (phase morphology studied by means of scanning electron microscopy) and aesthetic (colour and lightness measured by spectrophotometry) analyses. Also used were measurement of static contact angle of water droplets on the surface of the samples, total immersion water absorption, compressive strength, and abrasion resistance test. Results demonstrated that the addition of nanoparticles to an acrylic-based polymer enhanced its capability to consolidate and protect the limestone samples.

Preprint COMMUNICATION | doi:10.20944/preprints201811.0539.v1

Highly Active Nickel-Based Catalyst for Hydrogen Evolution in Anion Exchange Membrane Electrolysis

Alaa Y. Faid, Alejandro Oyarce Barnett, Frode Seland, Svein Sunde

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: nickel; HER; anion exchange membrane; electrolysis

Online: 22 November 2018 (05:30:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints201708.0062.v1

The Thermodynamic Characterization of Wetting by Submitting a Sessile Drop to Microgravity

Alfredo Calvimontes

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: surface energy, interfacial energy, surface tension, wetting model, wetting thermodynamics, sessile drop shape, microgravity

Online: 17 August 2017 (16:48:35 CEST)

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Preprint REVIEW | doi:10.20944/preprints201810.0160.v1

Safety Evaluation of Absorbent Hygiene Pads: a Review on Assessment Framework and Test Methods

Jihyun Bae, Hoonjeong Kwon, Jooyoun Kim

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: absorbent hygiene pad; diaper; feminine pad; risk assessment; safety; hazard; exposure; test method

Online: 8 October 2018 (16:26:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201912.0103.v1

Evaluation of the Geometallurgical Indexes for Comminution Properties at Sarcheshmeh Porphyry Copper Mine

Saiwan Mohammadi, Bahram Rezai, Aliakbar Abdollahzadeh, Sayed Mojtaba Mortazavi

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: geometallurgy; geometallurgical index; ore variability; bond work index; comminution; Sarcheshmeh

Online: 8 December 2019 (17:15:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0058.v1

Cooperativity of Spin Crossover Complexes: Combining Periodic Density Functional Calculations and Monte Carlo Simulations

Lars Kreutzburg, Christian G. Hübner, Hauke Paulsen

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: spin crossover; density functional calculations; Hubbard model; solid state; Slichter-Drickamer model; Monte Carlo simulation; Ising model

Online: 11 January 2017 (09:17:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints201705.0072.v1

One-Step Synthesis and Sintering of Skutterudite CoSb3: Smart Houses Materials?

Theodoros Giannakis, Alexandra Ioannidou, Dimitris Niarchos, Konstantinos Karyofyllis, Meletis Saltas, Sofoklis S. Makridis

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Thermoelectric Materials; Energy Harvesting; CoSb3/ZT

Online: 8 May 2017 (18:44:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201611.0004.v1

Use of Micropatterned Thin Film Nitinol in Carotid Stents to Augment Embolic Protection

Mahdis Shayan, Brian T. Jankowitz, Puneeth Shridhar, Youngjae Chun

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: thin film nitinol; carotid artery; micro mesh stent; micropatterning

Online: 1 November 2016 (06:54:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints201709.0095.v1

Effect of Microstructure on the Thermal Conductivity of Plasma Sprayed Y₂O₃ Stabilized Zirconia (8 %YSZ)

Ningning Hu, Matiullah Khan, Yongzhe Wang, Xuemei Song, Yi Zeng

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: thermal barrier coatings; 8 %YSZ; thermal conductivity; microstructure

Online: 20 September 2017 (08:28:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201705.0013.v1

A Diagram of Structure Evolution of Pb(Zn_1/3Nb_2/3)O₃-9%PbTiO₃ Relaxor Ferroelectric Crystals with Excellent Piezoelectric Properties

Hua Zhou, Tao Li, Nian Zhang, Manfang Mai, Mao Ye, Peng Lin, Chuanwei Huang, Xierong Zeng, Haitao Huang, Shanming Ke

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Pb(Zn1/3Nb2/3) O3-9%PbTiO3; relaxor ferroelectric crystals; structure phase transition; electromechanical coupling factor

Online: 1 May 2017 (10:35:10 CEST)

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Preprint ARTICLE | doi:10.3390/sci1010011.v1

Evaluation of Dissolution Enhancement of Aprepitant Drug in Ternary Pharmaceutical Solid Dispersions with Soluplus<sup>®</sup> and Poloxamer 188 Prepared by Melt Mixing

Stavroula Nanaki, Rodanthi Maria Eleftheriou, Panagiotis Barmpalexis, Margaritis Kostoglou, Evangelos Karavas, Dimitrios Bikiaris

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Aprepitant; soluplus; poloxamer 188; ternary solid dispersions; hot-melt mixing; dissolution enhancement

Online: 28 February 2019 (00:00:00 CET)

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Preprint ARTICLE | doi:10.20944/preprints201808.0046.v1

Hexagonal β-Co(OH)₂ Nanoparticle as a Precursor in a Solution-Processed LiCoO₂ and Its Electrochemical Properties

Rashmirekha Samal, Prem Prakash Dahiya, Subhasish Basu Majumder, Barsha Dash, Kali Sanjay, Maryam Barmi, Manickam Minakshi

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: cobalt hydroxide; LiCoO2; lithium-ion battery

Online: 2 August 2018 (10:14:51 CEST)

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Preprint REVIEW | doi:10.20944/preprints201804.0215.v1

Fabrication of Multifunctional Hybrid Composites Using Fly Ash to Control Environmental Pollutants: A Review

Jun Cong Ge, Sam Ki Yoon, Nag Jung Choi

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: fly ash; nanocomposite; environmental pollution; volatile organic compounds; heavy metal

Online: 16 April 2018 (16:15:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201811.0026.v1

Effect of SLM Process Parameters on the Quality of Al Alloy Parts; Part II: Microstructure and Mechanical Properties

Ahmed H. Maamoun, Yi F. Xue, Mohamed A. Elbestawi, Stephen C. Veldhuis

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: additive manufacturing; selective laser melting; AlSi10Mg; Al6061; SLM process parameters; quality of the AM parts

Online: 2 November 2018 (06:33:13 CET)

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Preprint REVIEW | doi:10.20944/preprints201807.0242.v1

Tunable Metal-Organic Frameworks for Heat Transformation Applications

Somboon Chaemchuen, Xuan Xiao, Nikom Klomkliang, Mekhman S. Yusubov, Francis Verpoort

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Metal-organic frameworks; heat transformation; low temperature heat; adsorbent; water adsorption.

Online: 13 July 2018 (15:32:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201702.0042.v1

Fundamental Study on the Development of Sprayed High Performance Fiber Reinforced Cementitious Composites for Impact-Blast Resistant

Yun-Wang Choi, Byung-Keol Choi, Sung-Rok Oh, Man-Seok Park

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: high volume fly ash, high fluidity concrete, early strength, field application

Online: 13 February 2017 (11:44:54 CET)

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Working Paper ARTICLE

Glycine–Nitrate Combustion Synthesis and Photocatalytic Degradation Properties of Cu-Based Nanoparticles

Hsu-Hui Cheng, Shiao-Shing Chen, Liang-Wei Jang, Hui-Ming Liu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: glycine-nitrate process; copper oxide nanopowders; heterogeneous catalysis; NP9EO

Online: 10 December 2019 (15:20:25 CET)

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Preprint ARTICLE | doi:10.20944/preprints201612.0115.v1

Discrete Particle Method for Simulating Hypervelocity Impact Phenomena

Erkai Watson, Martin O. Steinhauser

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: discrete element method; hypervelocity impact; debris cloud; fragmentation; space debris; multiscale modeling; computer simulation; high performance computing

Online: 23 December 2016 (10:21:21 CET)

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Preprint ARTICLE | doi:10.3390/sci1010029

Aprepitant Drug in Ternary Pharmaceutical Solid Dispersions with Soluplus® and Poloxamer 188 Prepared by Melt Mixing

Stavroula Nanaki, Rodanthi Maria Eleftheriou, Panagiotis Barmpalexis, Margaritis Kostoglou, Evangelos Karavas, Dimitrios Bikiaris

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Aprepitant; soluplus; poloxamer 188; ternary solid dispersions; hot-melt mixing; dissolution enhancement

Online: 10 June 2019 (00:00:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201701.0028.v9

Revealing the Phenomena of Heat and Photon Energy on Dealing Matter at Atomic Level

Mubarak Ali

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: heat energy; photon energy; fundamental forces; nanoscale phenomenon; atomic scale phenomenon; electron scale phenomenon

Online: 8 December 2017 (03:46:45 CET)

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Technology is in the way to reach in its climax but the basic understanding of science in many phenomena is still awaited even though the nature witnesses it. Scientific research reveals strong analogy between photon and electron. When an atom deals neutral state, it levitates electron of outer ring from the back surface while placing the bit-energy at front surface. Gravitation behavior of that electron starts at the centre of relaxation point by including the force of side pole where the pulling force of nearby unfilled state of that atom from the front surface results into depict forcing energy shape like Gaussian distribution symbol with both ends turned called unit photon. The inertia is being involved at each stage of changing direction of that electron by introducing the disappearances of forces of two poles against the appearances of forces of two opposite poles during rest to motion and motion to rest in the first half-cycle. The same is the case in the second half-cycle of that electron during rest to motion and motion to rest but it is under different introduction of the disappearances of forces against appearances of forces. However, at stage of levitating or gravitating period of electron, only one force is being involved at one time where the opposite force is disappeared. The uninterrupted confined inter-state electron-dynamics of atom under the availability of several bits of bit-energy results into generate forcing energy shape like a wave. Two bits of bit-energy where shape of bit for first half-cycle is like integral symbol and second half-cycle is like opposite integral symbol which are being placed along the configuring trajectory of inter-state electron-dynamics during forward-direction cycle and two bits of bit-energy shape in opposite order are being placed along the trajectory of inter-state electron-dynamics during back-direction cycle. Generating forcing energy of unit photon in each cycle is pushing to the rear side by remaining connected till the electron is not restoring the state of rest. Silicon atom is considered as a model system under neutral state. Uninterrupted confined inter-state electron-dynamics result into generate forcing energy that can travel immeasurable length and unavailability of necessitating bit-energy at any interrupted stage result into generate an overt photon. Inter-state electron-dynamics for at least two cycles generate an overt photon –a photon length twice to unit photon. Under certain interaction of unit photon, it divides equally into two bits of bit-energy instead of dividing into tits and bits of heat. The mechanism of generating photon characteristic current by the electron of neutral state atom validates that atoms are four-dimensional discs at centre of dealing no force. An isolated electron is being grounded under directed forcing energy to impinge a neutral state atom where the gained instantaneous velocity under merged energy resulting into distort atom at that point. Matter changes the role of energy and force under various sorts of interactions. Here, heat energy and photon energy explore matter at atomic and electron levels, thus, devise basis of science to describe.

Preprint ARTICLE | doi:10.20944/preprints201801.0036.v1

Atomic Structure and Binding of Carbon Atoms

Mubarak Ali

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: atomic structure; carbon atomic states; atomic binding; glassy carbon

Online: 7 January 2018 (10:42:10 CET)

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Many studies deal synthesis of carbon materials including all the disclosed states. This study describes the binding mechanism of different state carbon atoms. The binding energy as per gauge of certain state carbon atom is being invited under the application of force. In evolving different structures of carbon atoms their admissible electron-dynamics generate binding energy. Evolution of graphite structure is one-dimensional when certain amalgamated atom executes electron-dynamics to gain stable state to bind atom of attained stable state. Evolution of graphite structure is two-dimensional when amalgamated atoms under attained dynamics deal difference in surface format forces at the point of binding. Structural evolution is two-dimensional for nanotube and four-dimensional for fullerene (bucky balls). Structure evolution of graphite, nanotube and fullerene involve surface format forces mainly to invite binding energy of their atoms as per gauge of electron-dynamics. Structural evolutions of diamond and Lonsdaleite are under the joint application of surface format forces and grounded format forces to invite binding energy of atoms. Structural evolution of graphene involves both surface and space format forces to invite binding energy of atoms. Glassy carbon is related to layered wholly topological structure where layers of gas state carbon atoms, graphitic state and lonsdaleite state are being involved in successive manner to invite binding energy under space, surface and grounded format forces. Due to maintenance of electrons, carbon atoms do not bind when in the gas state. Diamond is south to ground tetra-dimensional, Lonsdaleite is south to ground bi-dimensional and graphene is ground to north tetra-dimensional topological structures. The Mohs hardness of carbon-based materials under different levitation gravitation behaviors attempting at electron level under contraction expansion of clamping energy knot is sketched. Carbon atoms when in fullerene structure is the best model to understand the influencing force at ground surface and the best model to explain binding mechanism in atoms of other elements.

Preprint ARTICLE | doi:10.20944/preprints201912.0307.v1

Submicron Sized Nb Doped Lithium Garnet for High Ionic Conductivity Solid Electrolyte and Performance of All Solid-State Lithium Battery

Yan Ji, Cankai Zhou, Feng Lin, Bingjing Li, Feifan Yang, Huali Zhu, Junfei Duan, Zhaoyong Chen

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Solid State Electrolyte; Submicron Powders; Garnet; Lithium Ion Conductivity; Solid-State Batteries

Online: 23 December 2019 (13:07:38 CET)

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Preprint REVIEW | doi:10.20944/preprints201807.0050.v1

Review: Modes and Processes of Severe Plastic Deformation

Vladimir Segal

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: severe plastic deformation (SPD); mode deformation; simple shear and pure shear; structure modification; SPD techniques

Online: 3 July 2018 (13:10:23 CEST)

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Preprint REVIEW | doi:10.20944/preprints202207.0091.v1

Chirality in the Solid State: Chiral Crystal Structures in Chiral and Achiral Space Groups

Gerhard H. Fecher, Jürgen Kübler, Claudia Felser

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Chiral Materials; Chiral Space Groups; Chirality; Chirality measure; Electronic structure; Circular Dichroism

Online: 6 July 2022 (08:55:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201906.0199.v1

Total Bond Order Density as a Quantum Mechanical Metric for Materials Design: Application to Chalcogenide Crystals

Sahib Hasan, Khagendra Baral, Wai-Yim Ching

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Chalcogenide crystals, electronic structure, optical properties, mechanical properties, total bond order density, density functional theory.

Online: 20 June 2019 (11:40:05 CEST)

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Preprint REVIEW | doi:10.20944/preprints202002.0112.v1

Electrolytes for Energy Dense Batteries

Rana Mohtadi

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: electrolyte; hydride; battery

Online: 9 February 2020 (17:11:44 CET)

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Preprint REVIEW | doi:10.20944/preprints202102.0345.v1

Advanced Selection Materials in Solar Cell Efficiency and their Properties- A Comprehensive Review

Ibrahim Alarifi

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Copper indium gallium selenide layers; Solar cell efficiency; Self-cleaning; Superhydrophobic coatings; Vapour deposition technique

Online: 17 February 2021 (08:23:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints201709.0118.v1

Enhancement Experiment on Cementitious Activity of Copper Mine Tailings in Geopolymer System

Lin Yu, Zhen Zhang, Xiao Huang, Binquan Jiao, Dongwei Li

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: copper mine tailings; mechanical activation; thermal activation; alkaline roasting; alkali leaching

Online: 25 September 2017 (08:41:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201705.0086.v1

Chemical Ordering in Na-Pb and Na-Hg Binary Liquid Alloys

Ayideji Akintunde Ajayi, Enoch Debayo Ogunmola

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: binary liquid alloy; chemical ordering; sodium; theoretical study; Warren-Cowley parameter

Online: 9 May 2017 (11:28:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0113.v1

On the Determining Role of Texture in Causing Delamination During Impact Fracture of Ti and Nb-Ti Microalloyed Steel

Mingyu Sun, Xuemin Wang, R.D.K. Misra

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Ti and Nb-Ti microalloyed steel; microstructure; toughness; texture; delamination

Online: 8 July 2019 (12:16:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201801.0145.v1

Elastic Three-Dimensional Graphene Sponge Fabricated by the Liquid Crystals of Controlled Large Graphene Oxide Sheets

Qiuli Wei, Anaerguli Wufuer, Meisong Wang, Yuanyuan Wang, Liyi Dai

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: elastic; three-dimensional, liquid crystals; graphene sponge

Online: 16 January 2018 (17:03:06 CET)

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Preprint ARTICLE | doi:10.20944/preprints201802.0018.v1

Young’s Equation vs. Sessile Drop Accelerometry: A Comparison Using the Interfacial Energies of Seven Polymer-water Systems

Alfredo Calvimontes

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: surface energy, interfacial energy, surface tension, wetting model, wetting thermodynamics, sessile drop shape, microgravity

Online: 2 February 2018 (13:05:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0028.v1

Revealing Phenomena of Heat Energy, Levity, Gravity, Photons Characteristic Current to Light on Dealing Matter to Sub-Atom

Mubarak Ali

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: materials science; energy; materials chemistry and physics; nanoscale phenomena; atomic scale phenomena; sub-atomic scale phenomena

Online: 5 January 2017 (09:55:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0241.v1

Determination of Material Properties of Basketball. Finite Element Modeling of the Basketball Bounce Height

Andrzej Makowski

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: hyperelastic materials; FEM; basketball; sports floors; Ogden model; FIBA

Online: 13 January 2021 (11:36:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0028.v2

Revealing Phenomena of Heat Energy, Levity, Gravity and Photons Characteristic Current to Light on Dealing Matter to Sub-Atom

Mubarak Ali

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: materials science; energy; materials chemistry and physics; nanoscale phenomena; atomic scale phenomena; sub-atomic scale phenomena

Online: 19 January 2017 (11:05:14 CET)

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Preprint REVIEW | doi:10.20944/preprints201811.0077.v1

Earth-Abundant Electrocatalysts in Proton Exchange Membrane Electrolyzers

Xinwei Sun, Kaiqi Xu, Christian Fleischer, Xin Liu, Mathieu Grandcolas, Ragnar Strandbakke, Tor S. Bjørheim, Truls Norby, Athanasios Chatzitakis

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: polymer exchange membrane; electrocatalysts; noble metals; earth abundant elements; water splitting; acidic environment; oxygen evolution reaction; hydrogen evolution reaction; anode and cathode electrodes

Online: 5 November 2018 (03:09:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0034.v1

Investigations on the Tribological Performance of A390 Alloy Hybrid Aluminum Matrix Composite

Abhilash Edacherian, Ali Algahtani, Vineet Tirth

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: aluminum matrix composites; hybrid; A390; SiC; Gr; MoS2; tribological properties

Online: 2 November 2018 (07:50:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints201910.0315.v1

Electromechanical Properties of PVDF-Based Polymers Reinforced with Nanocarbonaceous Fillers for Pressure Sensing Applications

Javier Teixido, Pedro Costa, Senentxu Lanceros-Mendez, Jose Manuel Abete, Aitzol Iturrospe Iregui

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: piezoresistivity; PVDF; nanocarbonaceous; electromechanical; pressure sensibility

Online: 27 October 2019 (16:17:54 CET)

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Preprint ARTICLE | doi:10.20944/preprints201907.0070.v1

Characterization of Material Properties Based on Inverse Finite Element Modelling

Mikdam Jamal, Michael Morgan

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: material charecterisation; inverse finite element material modelling; elastic plastic material model; Drucker-Prager material model

Online: 4 July 2019 (10:50:03 CEST)

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This paper describes a new approach that can be used to determine the mechanical properties of unknown materials and complex material systems. The approach uses inverse finite element modelling (FEM) accompanied with a designed algorithm to obtain the modulus of elasticity, yield stress and strain hardening material constants of an isotropic hardening material model, as well as the material constants of the Drucker-Prager material model (modulus of elasticity, cap yield stress and angle of friction). The algorithm automatically feeds the input material properties data to finite element software and automatically runs simulations to establish a convergence between the numerical loading-unloading curve and the target data obtained from continuous indentation tests using common indenter geometries. A further module was developed to optimise convergence using an inverse FEM analysis interfaced with a non-linear MATLAB algorithm. A sensitivity analysis determined that the dual Spherical and Berkovich (S&B) approach delivered better results than other dual indentation methods such as Berkovich and Vickers (B&V) and Vickers and Spherical (V&S). It was found that better convergence values can be achieved despite a large variation in the starting parameter values and / or material constitutive model and such behaviour reflects the uniqueness of the dual S&B indentation in predicting complex material systems. The study has shown that a robust optimization method based on a non-linear least-squares curve fitting function (LSQNONLIN) within MATLAB and ABAQUS can be used to accurately predict a unique set of elastic plastic material properties and Drucker-Prager material properties. This is of benefit to the scientific investigation of properties of new materials or obtaining the material properties at different location of a part which might be not be similar due to manufacturing processes (e.g. different heating and cooling rates at different locations).

Preprint ARTICLE | doi:10.20944/preprints202108.0189.v1

The Mechanism of Joint Reduction of MoO3 and CuO by Combined Mg/C Reducer at High Heating Rates

Hasmik Kirakosyan, Khachik Nazaretyan, Sofiya Aydinyan, Suren Kharatyan

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Joint reduction of oxides; high heating rate; Mg/C combined reducer; dysynergistic effect; activation energy

Online: 9 August 2021 (10:19:22 CEST)

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Working Paper ARTICLE

Comparison between Methods for Indirect Assessment of Buildability in Fresh 3D Printed Mortar and Concrete

Irina Ivanova, Egor Ivaniuk, Sameercharan Bisetti, Venkatesh N. Nerella, Viktor Mechtcherine

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: 3D concrete printing; digital concrete; layered extrusion; fresh concrete rheology; green strength; buildability; rotational rheometry

Online: 21 September 2021 (09:14:50 CEST)

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Preprint REVIEW | doi:10.20944/preprints202007.0514.v1

Review on Multi-Pass Friction Stir Processing of Aluminium Alloys

Oritonda Muribwathoho, Sipokazi Mabuwa, Velaphi Msomi

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: tensile strength; ductility; microstructure

Online: 22 July 2020 (11:01:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201805.0431.v1

MIL-100(Al) Gels as an Excellent Platform Loaded with Doxorubicin Hydrochloride for pH-Triggered Drug Release and Anticancer Effect

Yuge Feng, Chengliang Wang, Fei Ke, Jianye Zang, Junfa Zhu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: metal-organic gels; doxorubicin loading and release; pH-responsiveness; anticancer effect

Online: 30 May 2018 (05:01:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202010.0026.v1

Insight on TiO2-ZnO Photocomposite Competence Fabricated via Sonication Assisted with Gelatin for Rhodamine B Degradation

Arafat Toghan, Kamal K. Taha, A. Modwi

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: TiO2-ZnO photocatalysts; gelatin; William-Hall plots; Rhodamine B degradation

Online: 1 October 2020 (17:03:10 CEST)

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Preprint REVIEW | doi:10.20944/preprints202310.1164.v1

Green Synthesis of Metal and Metal Oxide Nanoparticles for Recent Applications

Hanaa M Abuzeid, Christian M Julien, Likun Zhu, Ahmed M. Hashem

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Nanotechnology; Green synthesis; Metals; Bio-reductants; Lithium-ion batteries; Supercapacitors; Photocatalysts; Cancer therapy.

Online: 18 October 2023 (12:27:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0108.v1

Application of Computer Simulation in EV31A Magnesium Alloy Casting Process Using MAGMASoft Software

Robert Jarosz, Andrzej Kiełbus, Adam Gryc

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: magnesium alloy; EV31A; MAGMASoft; simulation; casting; foundry

Online: 9 April 2018 (11:06:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0357.v1

Negative Electrical Conductivity Metamaterials

Edward Bormashenko

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: metamaterial; negative electrical conductivity; negative mass; Drude-Lorentz model; negative refraction

Online: 28 March 2022 (08:56:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0126.v1

Transformation Kinetics of Burnt Lime in Freshwater and Sea Water

Harald Justnes, Carlos Escudero-Oñate, Øyvind Aaberg Garmo, Martin Mengede

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: calcium oxide; calcium hydroxide; kinetics; lime; magnesium hydroxide; sea water

Online: 5 September 2020 (07:49:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0103.v1

Evolution of Elevated-Temperature Strength and Creep Resistance during Multi-Step Heat Treatments in Al-Mn-Mg Alloy

G. S. Wang, K. Liu, S. L. Wang

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Al-Mn-Mg alloy; dispersoids; heat treatment; elevated temperature; strength; creep resistance

Online: 7 June 2018 (05:59:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0160.v1

Acoustic Properties of Composite Synthesized from Activated Zeolite and Fibre

Hidjan Hidjan, Sutanto Sutanto, Nanang Rohadi

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Sound Absorption Coefficient; Noise; Activated Zeolite; Banana Stem Fibre; Acoustical material

Online: 10 September 2018 (09:32:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0487.v1

3D Microstructure Reconstruction of Al-La Microstructure using Diffraction Contrast Tomography and Lifted Multicut

Ya Su, Zhe Liu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: diffraction contrast tomography; Al-La dendrite; lamellar eutectic; lifted multicut

Online: 25 July 2018 (13:31:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0164.v1

Radiation Effect on Shape Memory Alloy

Amine Riad, Amine Riad, Amine Riad, Mohamed Mansouri

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Shape memory alloy, SMA, Smart material, Radiation effect, solar radiation effect, radiation heat.

Online: 13 December 2018 (09:35:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints201902.0098.v1

Perpendicular Exchange Bias of Co/Ni mUltilayers Adjacent to Antiferromagnetic FeRh Layer

Soyoung Jekal, Dao Phoung

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: exchange bias effect; perpendicular exchange bias

Online: 12 February 2019 (10:18:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0028.v3

Revealing Phenomena of Heat Energy, Levity, Gravity and Photons Characteristic Current to Light on Dealing Matter to Sub-Atom

Mubarak Ali

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: materials science; energy; materials chemistry and physics; nanoscale phenomena; atomic scale phenomena; sub-atomic scale phenomena

Online: 14 March 2017 (07:40:28 CET)

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Technology has nearly reached to its climax but the basic understanding of science in many phenomena is still awaited. Scientific research reveals strong analogy between electron and photon. Atoms that execute suitable electronic transitions, on absorbing heat energy at shunt level, excite their electrons. De-excitation of an electron, where inertia is involved, results depicting energy in the shape-like Gaussian distribution. The wavelength of photon at point of generation remains in inter-state electron’s gap distance and atoms of all those suitable elements that glitter perform like magician, throwing one and catching other, where an electron excites at shunt level of energy and configure trajectory under inertia-levity-inertia and de-excites at free fall configuring trajectory under inertia-gravity-inertia and silicon atom is a model system. In such atoms, heat energy of merged photons is cultivated and that shunt energy perturb the balance of inherent energy between electron and nucleus while balancing it via another electronic transition in reverse mode of the same atom. Uninterrupted confined inter-state electron-dynamics results into wave that can travel immeasurable length and on breaking inter-state electron-dynamics results into fixed length discrete energy wave called a photon. Such photons increase wavelength on decreasing frequency, propagate to hard X-ray, to visible spectrum, and to beyond. Here, I discuss that heat energy is due to merged photons, photons characteristic current are due to photons having wavelength in inter-state electron’s gap distance and light is due to photons having wavelength in visible spectrum. Force of repulsion or attraction in certain materials engages the phenomenon of levitism or gravitism instead of magnetism where inertia is no longer prevailed. All structural motifs and dynamics are subjected to characteristic photons as long as bearing the neutral behavior of the external forces. A structural design delivers straight-forward application on coordinating different energy shaped photons. The various gadgets, devices and instruments only operate energy as per need of necessity. Here, materials science explores matter to sub-atomic level while coordinating and interacting energy and devises science to describe.

Preprint ARTICLE | doi:10.20944/preprints201701.0028.v6

Revealing the Phenomena of Heat and Photon Energy on Dealing Matter at Atomic level

Mubarak Ali

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: heat energy; photon energy; materials science; nanoscale phenomenon; atomic scale phenomenon

Online: 20 June 2017 (05:07:01 CEST)

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Technology is in the way to reach in its climax but the basic understanding of science in many phenomena is still awaited despite the fact that nature justifies all those. Scientific research reveals strong analogy between electron and photon. Atoms that execute suitable electronic transitions, on absorbing heat energy at shunt level, excite their electrons. De-excitation of an electron under the gravitational force of its nucleus, where inertia is involved, results into depicting energy in the shape like Gaussian distribution. The wavelength of photon remains in inter-state electron’s gap where the source of generating energy in wave-like fashion is due to confined electron-dynamics of that atom eligible to execute electronic transition; energy configures under electron’s trajectory while excitation period is due to inertia-levitation-inertia behaviours and energy configures under electron’s trajectory while de-excitation period is due to inertia-gravitation-inertia behaviours. Silicon atom is a model system of it. Uninterrupted confined inter-state electron’s motion results into configure force energy that can travel immeasurable length where interruption from the point of generation termed it a photon. Such photons increase wavelength under decreasing energy. Here, I discuss that heat energy is due to merged photons or squeezed photons and photonic current is due to the configuring energy in inter-state electron’s gap under confined electron-dynamics of the atom. Force of repulsion or attraction in certain materials engages the phenomenon of levitism or gravitism where inertia is exempted. Structural motifs and dynamics are subjected to characteristic photons as long as atoms are dealing neutral behavior of field forces. A structural design delivers straight-forward application on dealing photons of certain wavelengths. Here, heat energy and photon energy explore matter at electron level. Thus, devise science to describe.

Preprint ARTICLE | doi:10.20944/preprints201711.0004.v1

A Semi-Pilot Photocatalytic Rotating Reactor (RFR) with Supported TiO₂ /Ag Catalysts for Water Treatment

Carlos Montalvo, Claudia Aguilar, Roberto Alcocer, Miguel Ramirez

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: rotating photocatalytic reactor; TiO2 /Ag catalysts; water treatment

Online: 1 November 2017 (04:44:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints201803.0246.v1

Fabrication Technology and Material Characterization of Hot Rolled Cylindrical Fe-6.5wt.% Si Bars

Shibo Wen, Shaowei Xue, Chaoyu Han, Binbin Liu, Yongfeng Liang, Feng Ye

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Fe-6.5wt.% Si alloy; hot bar rolling; microstructure; texture; mechanical property

Online: 29 March 2018 (06:15:08 CEST)

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Preprint REVIEW | doi:10.20944/preprints201808.0193.v1

Influence the Fillers Orientation: A Short Review

Nabilah Afiqah Mohd Radzuan, Abu Bakar Sulong, Mahendra Rao Somalu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: conductive polymer composite; orientation; electrical conductivity.

Online: 9 August 2018 (14:53:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201701.0028.v4

Revealing Phenomena of Heat Energy, Levity, Gravity and Photons Characteristic Current to Light on Dealing Matter to Sub-Atom

Mubarak Ali

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Heat energy and photon energy; Materials Science; Nanoscale Phenomena; Atomic Scale Phenomena; Sub-Atomic Scale Phenomena

Online: 19 April 2017 (11:26:33 CEST)

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Technology is in the way to reaching in its climax but the basic understanding of science in many phenomena is still awaited. Scientific research reveals strong analogy between electron and photon. Atoms that execute suitable electronic transitions, on absorbing heat energy at shunt level, excite their electrons. De-excitation of an electron under the gravitational force of its nucleus, where inertia is involved, results depicting energy in the shape like Gaussian distribution. The wavelength of photon remains in inter-state electron’s gap where the source of generating energy in wave-like fashion is due to electronic transitions under confined electron-dynamics; energy configures under electron’s trajectory in the excitation period is due to inertia-levitation-inertia behaviours while energy configures under electron’s trajectory in the de-excitation period is due to inertia-gravitation-inertia behaviours. Silicon atom is a model system of it. Uninterrupted confined inter-state electron-dynamics results into configure energy in a wave-like fashion that can travel immeasurable length and on interruption from the point of generation, it becomes a photon. Such photons increase wavelength on decreasing energy while travelling through inherently built gap of splitted inert gas atoms where they give light (glow) on reaching wavelength in the visible range. Here, I discuss that heat energy is due to merged photons, photons characteristic current are due to photons having wavelength in inter-state electron’s gap and light is due to photons, following the wavelength in the visible range. Force of repulsion or attraction in certain materials engages the phenomenon of levitism or gravitism where inertia is exempted. All structural motifs and dynamics are subjected to characteristic photons as long as atoms are under neutral behavior of field force. A structural design delivers straight-forward application on dealing photons at different wavelengths. Here, materials science explores matter at electronic level while absorbing heat energy and generating photon energy. Thus, devise science to describe.

Preprint REVIEW | doi:10.20944/preprints201811.0019.v1

Layered Ternary and Quaternary Transition Metal Chalcogenide Based Catalysts for Water Splitting

Anand P. Tiwari, Travis G. Novak, Xiuming Bu, Johnny C. Ho, Seokwoo Jeon

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: hydrogen; electrocatalysts; transition metal; layered material; heterostructure; hierarchical; surface engineering

Online: 2 November 2018 (05:16:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints201802.0083.v1

Flow Behavior Characteristics and Processing Map of Fe-6.5wt.%Si Alloys during Hot Compression

Shibo Wen, Chaoyu Han, Bao Zhang, Yongfeng Liang, Feng Ye, Junpin Lin

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Fe-6.5wt.%Si alloy; hot compression; processing map; microstructure; optimized processing parameter

Online: 11 February 2018 (11:20:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints201712.0168.v1

Valorization of Municipal Waterworks Sludge to Produce Ceramic Floor Tiles

Lara P. Rodrigues, José Nilson F. Holanda

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: municipal waterworks sludge; waste; recycling; valorization; floor tiles

Online: 25 December 2017 (07:40:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints202008.0153.v1

Determination of Formation Energies and Phase Diagrams of Transition Metal Oxides with DFT+U

Daniel Mutter, Daniel F. Urban, Christian Elsässer

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: transition metal oxides; density functional theory; DFT+U; materials modelling; phase diagrams

Online: 6 August 2020 (10:32:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0344.v1

Brazing of Mo to Glidcop Dispersion Strengthened Copper for Accelerating Structures

Valentina Casalegno, Sergio Perero, Monica Ferraris, Mauro Taborelli, Gonzalo Arnau Izquierdo, Stefano Sgobba, Milena Salvo

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: brazing; alumina dispersion-strengthened copper; mechanical test

Online: 19 July 2018 (05:18:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201901.0264.v1

Thermal and Dynamic Properties of Woven Kenaf/Carbon Fibre Reinforced Epoxy Hybrid Composite

Humaira Alias Aisyah, Md. Tahir Paridah, Salit Mohd Sapuan, Abdan Khalina, Omer Berk Berkalp, Seng Hua Lee, Natasha Ramli

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: hybrid composites; thermal analysis; kenaf; carbon fibre; epoxy

Online: 26 January 2019 (02:55:12 CET)

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Preprint REVIEW | doi:10.20944/preprints202301.0523.v1

Potential Future Alternative Resources for Rare Earth Elements: Opportunities and Challenges

Balaram Vysetti

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: rare earth elements; deposits; alternative sources; marine sediments; river sediments; phospho-rites; red mud; fly ash; acid mine drainage; e-waste; extra-terrestrial

Online: 28 January 2023 (08:38:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints201712.0143.v1

Strain Localization during Equal-Channel Angular Pressing analyzed by Finite Element Simulations

Tobias Daniel Horn, Christian Bert Silbermann, Philipp Frint, Martin Franz-Xaver Wagner, Jörn Ihlemann

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: equal-channel angular pressing; ECAP; shear band; matrix band; kinematic hardening; FEM; strain localization

Online: 20 December 2017 (10:01:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0028.v7

Revealing the Phenomena of Heat and Photon Energy on Dealing Matter at Atomic Level

Mubarak Ali

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: heat energy; photon energy; materials science; nanoscale phenomenon; atomic scale phenomenon

Online: 22 August 2017 (05:58:38 CEST)

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Technology is in the way to reach in its climax but the basic understanding of science in many phenomena is still awaited despite the fact that nature witnesses. Scientific research reveals strong analogy between electron and photon. Atoms of solid state behavior that execute suitable electron transitions excite electron at target while absorbing heat energy at shunt level. De-excitation of electron under the pulling force of nearby unfilled state available at bare surface of atom results into depicting force energy shape-like Gaussian distribution called unit photon where inertia involved at each stage of changing state. The continuous cycles of excitation and de-excitation of electron confined within inter-state (filled to unfilled and unfilled to filled) result into generate force energy in wave-like fashion propagating in the inter-state electron’s gap of adjacent atoms in the lattice; in each unit photon, the force energy configures under electron’s trajectory while excitation period is due to inertia-levitation-inertia behaviors and force energy configures under electron’s trajectory while de-excitation period is due to inertia-gravitation-inertia behaviors. Silicon atom is considered as a model system of it. Uninterrupted confined inter-state electron-dynamics results into configure force energy that can travel immeasurable length where interruption from the point of generation termed it an overt photon –a long length photon. Such photons increase wavelength under decreasing energy when travelling in the medium other than inter-state electron’s gap where light glow is observed on attaining wavelength of their certain density in the visible range. They act as merged photons or squeezed photons while interacting (coordinating) to suitable medium, thus, on merging or squeezing convert into heat energy where atoms like silicon again configure them into force energy under the trajectory of electrons. Thus, heat energy dealing to suitable matter at atomic level transforms into photon energy. Involving levitation behavior in the course of exciting electron and gravitation behavior in the course of de-exciting electron validates that force of repulsion or attraction in certain materials engages the phenomenon of levitism or gravitism where inertia is exempted. Here, heat energy and photon energy explore matter at electron level. Thus, devise science to describe.

Working Paper ARTICLE

A Comparison between Semisolid Casting Methods for Aluminium Alloys

Anders E. W. Jarfors

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Semisolid casting; RheoMetal process; GISS process; SEED process; production; capability; surface treatment; heat treatment; tool-life; productivity

Online: 19 September 2020 (05:15:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202004.0260.v1

Highly Porous Platinum Electrodes for Dry Ear-EEG Measurements

Max Eickenscheidt, Patrick Schäfer, Yara Baslan, Claudia Schwarz, Thomas Stieglitz

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Ear-EEG; laser structuring; porous platinum; Berger effect

Online: 16 April 2020 (07:39:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201911.0344.v1

Atomistic Simulation for Rejuvenation of Cu-Zr Metallic Glasses by Strain

Eunsung Jekal

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: bulk metallic glass; molecular dynamic simulation

Online: 27 November 2019 (10:28:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints201801.0036.v2

Atomic Structure and Binding of Carbon Atoms

Mubarak Ali

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: atomic structure; carbon atomic states; atomic binding; glassy carbon

Online: 2 March 2018 (14:37:34 CET)

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Many studies deal synthesis of carbon materials including all the disclosed states. This study describes the binding mechanism of different state carbon atoms. The binding energy as per gauge of certain state carbon atom is being invited under the application of force. In evolving different structures of carbon atoms their admissible electron-dynamics generate binding energy. Evolution of graphite structure is one-dimensional when certain amalgamated atom executes electron-dynamics to gain stable state to bind atom of attained stable state. Evolution of graphite structure is two-dimensional when amalgamated atoms under attained dynamics deal difference in surface format forces at the point of binding. Structural evolution is two-dimensional for nanotube and four-dimensional for fullerene (bucky balls). Structure evolution of graphite, nanotube and fullerene involve surface format forces mainly to invite binding energy of their atoms as per gauge of electron-dynamics. Structural evolutions of diamond and Lonsdaleite are under the joint application of surface format forces and grounded format forces to invite binding energy of atoms. Structural evolution of graphene involves both surface and space format forces to invite binding energy of atoms. Glassy carbon is related to layered wholly topological structure where layers of gas state carbon atoms, graphitic state and lonsdaleite state are being involved in successive manner to invite binding energy under space, surface and grounded format forces. Due to maintenance of electrons, carbon atoms do not bind when in the gas state. Diamond is south to ground tetra-dimensional, Lonsdaleite is south to ground bi-dimensional and graphene is ground to north tetra-dimensional topological structures. The Mohs hardness of carbon-based materials under different levitation gravitation behaviors attempting at electron level under contraction expansion of clamping energy knot is sketched. Carbon atoms when in fullerene structure is the best model to understand the influencing force at ground surface and the best model to explain binding mechanism in atoms of other elements.

Chemistry and Materials Science