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Infrared Polariscopy Imaging of Linear Polymeric Patterns with a Focal Plane Array
- Source :
- Nanomaterials, Volume 9, Issue 5, Nanomaterials, Vol 9, Iss 5, p 732 (2019)
- Publication Year :
- 2019
- Publisher :
- MDPI AG, 2019.
-
Abstract
- 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.
- Subjects :
- Brightness
Materials science
focal plane array
hyperspectral imaging
Infrared
General Chemical Engineering
Synchrotron radiation
02 engineering and technology
010402 general chemistry
01 natural sciences
Article
thermal source
law.invention
lcsh:Chemistry
Optics
law
silk
General Materials Science
infrared spectroscopy
Absorption (electromagnetic radiation)
synchrotron radiation
business.industry
Hyperspectral imaging
021001 nanoscience & nanotechnology
Laser
Synchrotron
0104 chemical sciences
Cardinal point
lcsh:QD1-999
0210 nano-technology
business
Subjects
Details
- ISSN :
- 20794991
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Nanomaterials
- Accession number :
- edsair.doi.dedup.....f81bdc6488c7a34148c76ed2f177cbd8