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Proceedings Paper

Time-resolved vibrational spectroscopy of liquid crystals and polymer films using step-scan 2-D FTIR
Author(s): Vasilis G. Gregoriou; James L. Chao; Hirokazu Toriumi; Curtis A. Marcott; Isao Noda; Richard Alan Palmer
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Paper Abstract

The application of step-scan interferometry to the determination of two-dimensional infrared (2-D FT-IR) spectra is reported here. Two experiments are discussed; the first monitors the dynamic changes in the IR transmission spectrum of a polymer film due to the application of a small amplitude oscillatory stress. The other experiment involves a study of the kinetics of reorientation of uniaxially aligned nematic liquid crystals under the influence of external ac electric fields. In both cases, the dynamic IR signals originate from the reorientation of the electric-dipole transition moments, and thus provide information at the molecular level about the macroscopic behavior of the systems under investigation.

Paper Details

Date Published: 1 March 1992
PDF: 2 pages
Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); doi: 10.1117/12.56295
Show Author Affiliations
Vasilis G. Gregoriou, Duke Univ. (United States)
James L. Chao, IBM Corp. (United States)
Hirokazu Toriumi, Univ. of Tokyo (Japan)
Curtis A. Marcott, Procter & Gamble Co. (United States)
Isao Noda, Procter & Gamble Co. (United States)
Richard Alan Palmer, Duke Univ. (United States)

Published in SPIE Proceedings Vol. 1575:
8th Intl Conf on Fourier Transform Spectroscopy
Herbert Michael Heise; Ernst Heiner Korte; Heinz W. Siesler, Editor(s)

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