論文

査読有り
2003年4月

Helix unwinding process in the chiral smectic C phase of MHPOBC as observed by conoscopy

LIQUID CRYSTALS
  • S Suwa
  • ,
  • Y Takanishi
  • ,
  • H Hoshi
  • ,
  • K Ishikawa
  • ,
  • H Takezoe

30
4
開始ページ
499
終了ページ
505
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1080/0267829031000091147
出版者・発行元
TAYLOR & FRANCIS LTD

Conoscopic studies have been made on the helix unwinding process in the chiral smectic C phase of MHPOBC. The unwinding process is rather unique in the sense that abrupt changes of the biaxiality and apparent tilt angle are followed by further gradual changes before the complete helix unwinding. The process is qualitatively explained by simulating the conoscopic images using the 4 x 4 matrix method with consideration of model molecular distributions, by taking account of both the ferroelectric and dielectric coupling between molecules and a field. The transmittance loss due to selective reflection was also measured under the application of a stepwise d.c. field. The shift of the dip position due to the loss, toward a longer wavelength region, was observed at low field. In contrast, the emergence of a transmittance loss at the same wavelength as that of an unperturbed state was observed. This phenomenon is explained by the ferroelectric deformation of a helix with the pitch unchanged.

リンク情報
DOI
https://doi.org/10.1080/0267829031000091147
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000182330300012&DestApp=WOS_CPL
ID情報
  • DOI : 10.1080/0267829031000091147
  • ISSN : 0267-8292
  • Web of Science ID : WOS:000182330300012

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