Viscositv Measurement in Ferroelectric Liquid Crystals Using a Polarization Switching Current
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概要
- 論文の詳細を見る
A new method to evaluate rotational viscosity η in ferroelectric liquid crystals is proposed. This method is based on the measurement of a polarization switching current upon field reversal. It is shown that a full width at half-maximum of the current peak t_w. is equal to 1.76η/P_sE, while the area gives twice the spontaneous polarization P_s. It is also shown that the sign of a dielectric anisotropy Δε is determined by the asymmetrical shape of the signal. A proportionality between t_w and E^<-1> was confirmed for a surface stabilized ferroelectric liquid crystal cell. The temperature dependences of P_s and η are presented.
- 社団法人応用物理学会の論文
- 1987-04-20
著者
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Takezoe Hideo
Tokyo Institute Of Technology Department Of Organic And Polymeric Materials
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NISHIYAMA Shinichi
Department of Electrical Engineering, Nagaoka University of Technology
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Fukuda Asuo
Department Of Kansei Engineering Faculty Of Textile Science And Technology Shinshu University
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Ouchi Yukio
Tokyo Institute Of Technology Department Of Organic And Polymeric Materials
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Fukuda Atsuo
Tokyo Institute Of Technology Department Of Bioengineering
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Nishiyama Shinichi
Department Of Electrical Engineering Nagaoka University Of Technology
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NISHIYAMA Shin-ichi
Tokyo Institute of Technology, Department of Organic and Polymeric Materials
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KIMURA Satoshi
Tokyo Institute of Technology, Department of Textile and Polymeric Materials
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Kimura Satoshi
Tokyo Institute Of Technology Department Of Textile And Polymeric Materials
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