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Detection of phase transition of 4-heptyloxy-4 '-n-cyanobiphenyl Langmuir films by Maxwell displacement current and optical second harmonic generation measurement
Tojima, A; Fujimaki, H; Ootake, H; Hiyoshi, R; Manaka, T; Iwamoto, M; Zhong-Can, OY
2004
Conference Name19th International Liquid Crystal Conference
Source PublicationMOLECULAR CRYSTALS AND LIQUID CRYSTALS
Volume412
Pages1807-1813
Conference DateJUN 30-JUL 05, 2002
Conference PlaceEDINBURGH, SCOTLAND
Publication PlaceABINGDON
ISSN1058-725X
PublisherTAYLOR & FRANCIS LTD
AbstractWe investigated 4-heptyloxy-4'-n-cyanobiphenyl (70CB) Langmuir films by monolayer compression using Maxwell displacement current (MDC) and optical second harmonic generation (SHG) measurements. In the region with a slope in the surface pressure - area (pi-A) isotherm, it was found that the s-s and p-s SH signals were suddenly generated by monolayer compression, although the change of MDC was very gentle. This result reveals the appearance of phase transition accompanying the monolayer structural change from C-infinitynu to Cs-symmetry, due to the shear induced azimuthal in plane reorientation in monolayers.
KeywordAIR-WATER-INTERFACE ORIENTATIONAL ORDER MONOLAYERS
DOI10.1080/15421400490439824
URL查看原文
Indexed ByCPCI
Language英语
WOS Research AreaChemistry ; Crystallography ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Crystallography ; Materials Science, Multidisciplinary
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://ir.itp.ac.cn/handle/311006/23725
CollectionSCI会议论文
Affiliation1.Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, Tokyo 1528552, Japan
2.Tsing Hua Univ, Ctr Adv Study, Beijing 10084, Peoples R China
3.Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Tojima, A,Fujimaki, H,Ootake, H,et al. Detection of phase transition of 4-heptyloxy-4 '-n-cyanobiphenyl Langmuir films by Maxwell displacement current and optical second harmonic generation measurement[C]. ABINGDON:TAYLOR & FRANCIS LTD,2004:1807-1813.
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