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Proceedings Paper

Some Applications Of Microtransmittance And Microreflectance Techniques
Author(s): K. Krishnan; S. L. Hill; L.. S. Gelfand
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Paper Abstract

A transmission microsampling accessory to use with FT-IR instruments was introduced at the Pittsburgh Conference, 1983. This accessory, which employs all-reflecting on-axis optics, has subsequently been modified, and this Universal Microsampling Unit can be used to record the transmission or the reflection spectra of samples as small as 20μm x 20μm in linear dimensions. The applications of this accessory to the study of the spectra of semiconductors (1) and polymers (2,3) have been published in the literature. The highly sensitive accessory can be used to record the spectra of single polymer filaments as small as 15/μm in diameter. Using a polarizer inserted in the optical path, dichroic spectra of single fibers, such as PET, have been recorded (3). The microsampling method has also been used for the study of contaminant particulates suspended in solution, characterization of different layers in a multi-layer polymer, and "fish eyes" on painted polymer panels (4). In this paper, we will briefly describe the universal microsampling accessory and some of it applications.

Paper Details

Date Published: 20 December 1985
PDF: 2 pages
Proc. SPIE 0553, Fourier and Computerized Infrared Spectroscopy, (20 December 1985); doi: 10.1117/12.970843
Show Author Affiliations
K. Krishnan, Bio-Rad Laboratories (United States)
S. L. Hill, Bio-Rad Laboratories (United States)
L.. S. Gelfand, Bio-Rad Laboratories (United States)

Published in SPIE Proceedings Vol. 0553:
Fourier and Computerized Infrared Spectroscopy
David G. Cameron; Jeannette G. Grasselli, Editor(s)

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