Article
Version 1
Preserved in Portico This version is not peer-reviewed
Nonlocal Soft Plasmonics in Planar Homogeneous Multilayers
Version 1
: Received: 3 August 2023 / Approved: 4 August 2023 / Online: 4 August 2023 (11:14:28 CEST)
A peer-reviewed article of this Preprint also exists.
Ramesh Narayan, P.; David, C. Nonlocal Soft Plasmonics in Planar Homogeneous Multilayers. Photonics 2023, 10, 1021. Ramesh Narayan, P.; David, C. Nonlocal Soft Plasmonics in Planar Homogeneous Multilayers. Photonics 2023, 10, 1021.
Abstract
Plasmonics is the study of resonant oscillations of free electrons in metals caused by incident electromagnetic radiation. Surface plasmons can focus and steer light on the subwavelength scale. Apart from metals, plasmonic phenomena can be observed in soft matter systems such as electrolytes where resonant charge oscillations can be induced for ions in solution. Due to their larger mass, they are plasmon-active in a lower frequency regime and on a larger wavelength scale. Spatial confinement allows increasingly strong charge interactions and gives rise to nonlocality or spatial dispersion effects. These effects manifest as additional longitudinal propagation modes and are known to cause plasmonic broadening and resonance shifts in metal nanostructures. We derive and discuss the nonlocal optical response of ionic plasmons using a hydrodynamic, two-fluid model in a planar homogeneous three-layer system with electrolyte-dielectric interfaces. Studying such systems enables us to identify and understand plasmonic phenomena in biological and chemical systems.
Keywords
nanophotonics; spatial dispersion; nonlocality; theory and simulation
Subject
Physical Sciences, Optics and Photonics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment
