Pulsed Laser-Induced Liquid Crystal Alignment Parallel to the Exposure Polarization
Summary :
The alignment of a nematic liquid crystal (LC) parallel to the polarization direction of the laser could be induced by three types of polyimide (PI) films, a PI based on aromatic dianhydride and two PIs on alicyclic dianhydride, exposed to polarized pulsed laser at 266 nm at high fluence in air. The UV-visible absorption spectra of the PI films showed that a remarkable chemical change occurred after exposure at the high fluence in air. In contrast, in argon atmosphere the PI based on aromatic dianhydride was radiation-resistant and the exposed PI film could induce alignment of the LC molecules parallel to laser polarization. We estimate that the mechanism of the parallel alignment observed in argon is not the photodegradation but the orientation of the PI molecules.
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- IEICE TRANSACTIONS on Electronics Vol.E83-C No.10 pp.1553-1557
- Publication Date
- 2000/10/25
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- Special Section PAPER (Special Issue on Electronic Displays)
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Yinghan WANG, Toru NATSUI, Yutaka MAKITA, Atsushi KUMANO, Yasumasa TAKEUCHI, "Pulsed Laser-Induced Liquid Crystal Alignment Parallel to the Exposure Polarization" in IEICE TRANSACTIONS on Electronics,
vol. E83-C, no. 10, pp. 1553-1557, October 2000, doi: .
Abstract: The alignment of a nematic liquid crystal (LC) parallel to the polarization direction of the laser could be induced by three types of polyimide (PI) films, a PI based on aromatic dianhydride and two PIs on alicyclic dianhydride, exposed to polarized pulsed laser at 266 nm at high fluence in air. The UV-visible absorption spectra of the PI films showed that a remarkable chemical change occurred after exposure at the high fluence in air. In contrast, in argon atmosphere the PI based on aromatic dianhydride was radiation-resistant and the exposed PI film could induce alignment of the LC molecules parallel to laser polarization. We estimate that the mechanism of the parallel alignment observed in argon is not the photodegradation but the orientation of the PI molecules.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e83-c_10_1553/_p
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@ARTICLE{e83-c_10_1553,
author={Yinghan WANG, Toru NATSUI, Yutaka MAKITA, Atsushi KUMANO, Yasumasa TAKEUCHI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Pulsed Laser-Induced Liquid Crystal Alignment Parallel to the Exposure Polarization},
year={2000},
volume={E83-C},
number={10},
pages={1553-1557},
abstract={The alignment of a nematic liquid crystal (LC) parallel to the polarization direction of the laser could be induced by three types of polyimide (PI) films, a PI based on aromatic dianhydride and two PIs on alicyclic dianhydride, exposed to polarized pulsed laser at 266 nm at high fluence in air. The UV-visible absorption spectra of the PI films showed that a remarkable chemical change occurred after exposure at the high fluence in air. In contrast, in argon atmosphere the PI based on aromatic dianhydride was radiation-resistant and the exposed PI film could induce alignment of the LC molecules parallel to laser polarization. We estimate that the mechanism of the parallel alignment observed in argon is not the photodegradation but the orientation of the PI molecules.},
keywords={},
doi={},
ISSN={},
month={October},}
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TY - JOUR
TI - Pulsed Laser-Induced Liquid Crystal Alignment Parallel to the Exposure Polarization
T2 - IEICE TRANSACTIONS on Electronics
SP - 1553
EP - 1557
AU - Yinghan WANG
AU - Toru NATSUI
AU - Yutaka MAKITA
AU - Atsushi KUMANO
AU - Yasumasa TAKEUCHI
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E83-C
IS - 10
JA - IEICE TRANSACTIONS on Electronics
Y1 - October 2000
AB - The alignment of a nematic liquid crystal (LC) parallel to the polarization direction of the laser could be induced by three types of polyimide (PI) films, a PI based on aromatic dianhydride and two PIs on alicyclic dianhydride, exposed to polarized pulsed laser at 266 nm at high fluence in air. The UV-visible absorption spectra of the PI films showed that a remarkable chemical change occurred after exposure at the high fluence in air. In contrast, in argon atmosphere the PI based on aromatic dianhydride was radiation-resistant and the exposed PI film could induce alignment of the LC molecules parallel to laser polarization. We estimate that the mechanism of the parallel alignment observed in argon is not the photodegradation but the orientation of the PI molecules.
ER -
English
