Physics – Condensed Matter
Scientific paper
Jun 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..430..385m&link_type=abstract
The eleventh international conference on fourier transform spectroscopy. AIP Conference Proceedings, Volume 430, pp. 385-387 (1
Physics
Condensed Matter
Liquids, Emulsions, And Suspensions, Liquid Crystals, Organic Compounds, Polymers, Time-Resolved Optical Spectroscopies And Other Ultrafast Optical Measurements In Condensed Matter
Scientific paper
Polarization angle dependences of infrared (IR) and time-resolved IR have been measured for a FLC mixture containing 20% cis-(2R,4R)-γ-butyrolactone 1 (YK230C) as a chiral dopant and 80% 5-octyl-2-(4-nonyloxyphenyl) pyrimidine (ONPP) as a nonchiral smectic base LC. These measurements and the measurements of the dichroic ratios of IR bands show that the apparent tilt angle and dichroic ratio in the dynamic state are larger than those in the static state. It seemed therefore that the order of the orientation is higher in the dynamic state than in the static state. In order to confirm the higher orientation order in the dynamic state, we performed time-resolved IR measurements of the FLC mixture for the delay time ranging from 0 to 500μs, which is much longer than the response time. The relaxation process was clearly observed after the response time.
Matsumoto Toshio
Ozaki Y.
Sakaguchi Kei
Yasuda Akiko
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