Defect Chaos and 1⁄f Noise in the Electrohydrodynamic Instability of Nematic Liquid Crystals

Shoichi Kai; Nobuyuki Chizumi; Mitsuhiro Kohono

doi:10.1143/JPSJ.58.1493

Journal of the Physical Society of Japan

Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015

Defect Chaos and 1⁄f Noise in the Electrohydrodynamic Instability of Nematic Liquid Crystals

Shoichi Kai, Nobuyuki Chizumi, Mitsuhiro Kohono

著者情報

ジャーナル認証あり

1989 年 58 巻 5 号 p. 1493-1496

DOI https://doi.org/10.1143/JPSJ.58.1493

詳細

抄録

A detailed investigation of defect motions has been carried out near the onset of the fluctuating Williams domains (FWD) in the electrohydrodynamic instability using a cell with intermediate aspect ratio. The number of defects in the cell changes nonperiodically in time with the 1⁄f-type power spectrum. The threshold for the onset of the FWD shows a large hysteresis in the present aspect ratio. We conclude that the FWD is the defect chaos with rather low dimensionality.