li-infraredpolariscopyimaging-2019.pdf (2.77 MB)
Infrared polariscopy imaging of linear polymeric patterns with a focal plane array
journal contribution
posted on 2019-05-13, 00:00 authored by R Honda, M Ryu, M Moritake, A Balčytis, V Mizeikis, J Vongsvivut, M J Tobin, D Appadoo, Jingliang LiJingliang Li, S H Ng, S Juodkazis, J Morikawa© 2019 by the authors. Licensee MDPI, Basel, Switzerland. Polariscopy is demonstrated using hyperspectral imaging with a focal plane array (FPA) detector in the infrared (IR) spectral region under illumination by thermal and synchrotron light sources. FPA Fourier-transform IR (FTIR) imaging microspectroscopy is useful for monitoring real time changes at specific absorption bands when combined with a high brightness synchrotron source. In this study, several types of samples with unique structural motifs were selected and used for assessing the capability of polariscopy under this 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 and higher order patterns (laser fabricated structures) were revealed. Spectral polariscopy at the absorption peaks can reveal the orientation of sub-wavelength patterns (even when they are not spatially resolved) or the orientation of the absorbing dipoles.
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Journal
NanomaterialsVolume
9Issue
5Article number
732Publisher
MDPILocation
Basel, SwitzerlandPublisher DOI
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eISSN
2079-4991Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2019, The AuthorsUsage metrics
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Science & TechnologyPhysical SciencesTechnologyChemistry, MultidisciplinaryNanoscience & NanotechnologyMaterials Science, MultidisciplinaryPhysics, AppliedChemistryScience & Technology - Other TopicsMaterials SciencePhysicsfocal plane arraythermal sourcesynchrotron radiationinfrared spectroscopyhyperspectral imagingsilkSPIDER SILKORIENTATIONMETAL
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