Dynamic Image Analysis for the Fluctuations of Electrohydrodynamic Convection in a Homeotropically Aligned Nematic Liquid Crystal : General Physics
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概要
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We have investigated the pattern fluctuations of electrohydrodynamic convection in a homeotropically aligned nematic layer by means of the dynamic image analysis. The time correlation function C_k(t) for the spatial Fourier coefficient was obtained from the observed patterns and exhibited the relaxational type. In the long-wavelength regime, it was found that the relaxation frequency is expressed as γ^<-1> (k) = α+ kk^2, where the coefficients α and k are functions of a normalized voltage ε, and γ^<-1> (O) ∝ ε. These results indicate that the collective fluctuation of pattern induced by rolls should be diffusive. The analogy with the second-order phase transition induced by a relaxational soft mode is also discussed.
- 社団法人日本物理学会の論文
- 2000-10-15
著者
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Orihara Hiroshi
Department Of Applied Physics Hokkaido University
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Nagaya Tomoyuki
Faculty Of Education Okayama University
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Orihara Hiroshi
Department Of Applied Physics Graduate School Of Engineering Nagoya University
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Orihara Hiroshi
Department Of Applied Physics Graduate School Of Engineering Hokkaido University
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