2004年6月
Coexistence of polar and nonpolar domains and their photocontrol in the B-7 phase of a bent-core liquid crystal containing azo dyes
PHYSICAL REVIEW E
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- 巻
- 69
- 号
- 6
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevE.69.061701
- 出版者・発行元
- AMER PHYSICAL SOC
Coexisting polar and nonpolar domains have been studied by means of texture observation, x-ray analysis, optical second-harmonic generation (SHG), and SHG microscopy in the B-7 phase of a bent-core mesogen doped with azo dyes. The bent-core molecules take a planar orientation and show high birefringence in the polar domain, while they take a homeotropic orientation and show low birefringence in the nonpolar domain. Good correspondence between real and SHG images was observed under a SHG microscope; the bright (high-birefringent) domain is SHG active and the dark (low-birefringent) domain is not SHG active. Photoisomerization of the azo dyes causes layer reorientation from the layer perpendicular to the substrate to that parallel to it.
- リンク情報
- ID情報
-
- DOI : 10.1103/PhysRevE.69.061701
- ISSN : 1539-3755
- Web of Science ID : WOS:000222502700062