Preprint Article Version 1 This version is not peer-reviewed

Focal Plane Array Infrared Imaging of Linear Polymeric Patterns

Version 1 : Received: 9 March 2019 / Approved: 11 March 2019 / Online: 11 March 2019 (09:38:21 CET)

How to cite: Honda, R.; Ryu, M.; Moritake, M.; Balcytis, A.; Mizeikis, V.; Vongsvivut, J.; Tobin, M.; Appadoo, D.; Li, J.; Ng, S.H.; Juodkazis, S.; Morikawa, J. Focal Plane Array Infrared Imaging of Linear Polymeric Patterns. Preprints 2019, 2019030127 (doi: 10.20944/preprints201903.0127.v1). Honda, R.; Ryu, M.; Moritake, M.; Balcytis, A.; Mizeikis, V.; Vongsvivut, J.; Tobin, M.; Appadoo, D.; Li, J.; Ng, S.H.; Juodkazis, S.; Morikawa, J. Focal Plane Array Infrared Imaging of Linear Polymeric Patterns. Preprints 2019, 2019030127 (doi: 10.20944/preprints201903.0127.v1).

Abstract

A focal plane array (FPA) detector was used for hyperspectral imaging in the infrared (IR) spectral region using thermal and synchrotron light sources. FPA Fourier-transform IR (FTIR) imaging microspectroscopy will be able to monitor real time changes at specific absorption bands when combined with high brightness synchrotron source. In this study, several types of samples with unique structural motifs were selected and used for assessing the capability of the FPA-FTIR imaging technique. It was shown that the time required for polariscopy at IR wavelengths can be substantially reduced by the FPA-FTIR imaging approach. By using natural and laser fabricated polymers with sub-wavelength features, alignment of absorbing molecular dipoles was revealed as well as higher order patterns (laser fabricated structures). Micro-spectroscopy of absorber orientation reveals alignment patterns even when they are not spatially resolved.

Subject Areas

focal plane array, thermal source, synchrotron radiation, infrared spectroscopy, hyperspectral imaging, silk, SZ2080

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