Monitoring surface molecular order in discotic liquid crystals

被引:8
作者
Burhanudin, Z [1 ]
Etchegoin, P [1 ]
机构
[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England
关键词
D O I
10.1016/S0009-2614(01)00094-X
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Polarized confocal Raman spectroscopy is used to monitor surface molecular alignment in a droplet of a prototype discotic liquid crystal. We show that polarization selection rules of Raman active modes can be used to infer molecular alignment along specific directions in situations where no other experimental technique is available. Substrate-induced planar alignment along the wetting edge of a droplet, as well as molecular orientation around topological surface defects are explicitly shown. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:7 / 12
页数:6
相关论文
共 20 条
  • [1] Averyanov E. M., 1988, Optics and Spectroscopy, V65, P513
  • [2] AVERYANOV EM, 1979, SOV PHYS JETP, V49, P910
  • [3] AVERYANOV EM, 1984, ZH EKSP TEOR FIZ, V59, P1227
  • [4] ONE-DIMENSIONAL ELECTRONIC CONDUCTIVITY IN DISCOTIC LIQUID-CRYSTALS
    BODEN, N
    BUSHBY, RJ
    CLEMENTS, J
    JESUDASON, MV
    KNOWLES, PF
    WILLIAMS, G
    [J]. CHEMICAL PHYSICS LETTERS, 1988, 152 (01) : 94 - 99
  • [5] MECHANISM OF QUASI-ONE-DIMENSIONAL ELECTRONIC CONDUCTIVITY IN DISCOTIC LIQUID-CRYSTALS
    BODEN, N
    BUSHBY, RJ
    CLEMENTS, J
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (07) : 5920 - 5931
  • [6] THE USE OF A TIME-RESOLVED RAMAN MICROPROBE TO STUDY THE ELECTRIC-FIELD-INDUCED FREEDERICKSZ TRANSITION IN THE ALKYL CYANOBIPHENYL HOMOLOGS
    BOOTH, KM
    COLES, HJ
    [J]. LIQUID CRYSTALS, 1993, 13 (05) : 677 - 690
  • [7] Cardona M., 1982, LIGHT SCATTERING SOL
  • [8] THE STRUCTURE AND ENERGETICS OF DEFECTS IN LIQUID-CRYSTALS
    CHANDRASEKHAR, S
    RANGANATH, GS
    [J]. ADVANCES IN PHYSICS, 1986, 35 (06) : 507 - 596
  • [9] Chandrasekhar S., 1992, LIQUID CRYSTALS
  • [10] TRANSIENT ELECTRO-OPTIC RAMAN-SCATTERING IN LIQUID-CRYSTALS
    COLES, HJ
    TIPPING, J
    [J]. NATURE, 1985, 316 (6024) : 136 - 138