High-speed memory switching of liquid crystalline copolymer/low molecular weight liquid crystal composite systems

Tisato Kajiyama, Hirokazu Yamane, Hirotsugu Kikuchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Reversible and bistable electro-optical switching characteristics have been investigated for induced smectic composite systems composed of side chain type nematic liquid crystalline polymer (nematic LCP) or its copolymer with weak polar methoxy terminal groups in the side chains and low molecular weight nematic liquid crystals (nematic LCs) with strong polar cyano end group. The liquid crystalline copolymer (LCcoP) with weak polar methoxy terminal groups in the side chains was used in order to improve the response speed of the bistable and reversible light switching for the binary composite system at room temperature. Although the LCcoP with 52.5 mol% substituted mesogenic side chains did not exhibit any mesophase characteristics at any temperature, this LCcoP induced a smectic state by mixing nematic LCs. A reversible and bistable electro-optical switching with a short response time (approximately 100 ms) was realized for the induced smectic binary composite system upon application of an appropriate electric field at room temperature.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages125-133
Number of pages9
ISBN (Print)0819424269
Publication statusPublished - Dec 1 1997
EventLiquid Crystal Materials, Devices, and Applications V - San Jose, CA, USA
Duration: Feb 12 1997Feb 13 1997

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume3015
ISSN (Print)0277-786X

Other

OtherLiquid Crystal Materials, Devices, and Applications V
CitySan Jose, CA, USA
Period2/12/972/13/97

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Kajiyama, T., Yamane, H., & Kikuchi, H. (1997). High-speed memory switching of liquid crystalline copolymer/low molecular weight liquid crystal composite systems. In Proceedings of SPIE - The International Society for Optical Engineering (pp. 125-133). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 3015). Society of Photo-Optical Instrumentation Engineers.