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

Tisato Kajiyama; Hirokazu Yamane; Hirotsugu Kikuchi

doi:10.1117/12.271387

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11 April 1997 High-speed memory switching of liquid crystalline copolymer/low-molecular-weight liquid crystal composite systems

Tisato Kajiyama, Hirokazu Yamane, Hirotsugu Kikuchi

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Proceedings Volume 3015, Liquid Crystal Materials, Devices, and Applications V; (1997) https://doi.org/10.1117/12.271387
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

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.

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Tisato Kajiyama, Hirokazu Yamane, and Hirotsugu Kikuchi "High-speed memory switching of liquid crystalline copolymer/low-molecular-weight liquid crystal composite systems", Proc. SPIE 3015, Liquid Crystal Materials, Devices, and Applications V, (11 April 1997); https://doi.org/10.1117/12.271387

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