Alignment Control of a Columnar Liquid Crystal for a Uniformly Homeotropic Domain Using Circularly Polarized Infrared Irradiation

Alignment Control of a Columnar Liquid Crystal for a Uniformly Homeotropic Domain Using Circularly Polarized Infrared Irradiation

Circularly polarized infrared irradiation of a hexagonal columnar mesophase with a free‐electron laser causes the liquid crystal to change from an “edge‐on” alignment to a uniformly homeotropic “face‐on” alignment (see Figure) due to vibrational excitation of the aromatic C–H vibration band of triph...

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Veröffentlicht in:Advanced materials (Weinheim) 2006-03, Vol.18 (5), p.607-610
Hauptverfasser: Monobe, H., Awazu, K., Shimizu, Y.
Format: Artikel
Sprache:eng
Schlagworte:
Alignment
columnar
Lasers
Liquid crystal
Liquid crystal, columnar
Photoisomerization
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Zusammenfassung:Circularly polarized infrared irradiation of a hexagonal columnar mesophase with a free‐electron laser causes the liquid crystal to change from an “edge‐on” alignment to a uniformly homeotropic “face‐on” alignment (see Figure) due to vibrational excitation of the aromatic C–H vibration band of triphenylene.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200501762