Bottom-Up Fabrication of Photonic Defect Structures in Cholesteric Liquid Crystals Based on Laser-Assisted Modification of the Helix

Controlled fabrication of defect structures is performed in cholesteric liquid crystals by a laser‐assisted polymerization process that induces a local elongation of the helix (see figure). Low‐threshold laser action is observed from the photonic defect‐mode observed within the selective reflection...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2007-05, Vol.19 (9), p.1187-1190
Main Authors: Yoshida, H., Lee, C. H., Matsuhisa, Y., Fujii, A., Ozaki, M.
Format: Article
Language:English
Subjects:
cholesteric
Liquid crystals
Liquid crystals, cholesteric
Nanofabrication
Photonic crystals
Two-photon absorption
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Description
Summary:Controlled fabrication of defect structures is performed in cholesteric liquid crystals by a laser‐assisted polymerization process that induces a local elongation of the helix (see figure). Low‐threshold laser action is observed from the photonic defect‐mode observed within the selective reflection band.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200601753