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Glassy dynamics in relaxation of soft-mode turbulence

Fahrudin Nugroho1,2, Takayuki Narumi1,*, Yoshiki Hidaka1, Junichi Yoshitani1, Masaru Suzuki1, and Shoichi Kai1

  • 1Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Fukuoka 819-0395, Japan
  • 2Physics Department, Gadjah Mada University, Yogyakarta 55281, Indonesia

  • *narumi@athena.ap.kyushu-u.ac.jp
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Phys. Rev. E 85, 030701(R) – Published 16 March, 2012

DOI: https://doi.org/10.1103/PhysRevE.85.030701

Abstract

The autocorrelation function of pattern fluctuation is used to study soft-mode turbulence (SMT), a spatiotemporal chaos observed in homeotropic nematics. We show that relaxation near the electroconvection threshold deviates from the exponential. To describe this relaxation, we propose a compressed exponential appearing in dynamics of glass-forming liquids. Our findings suggest that coherent motion contributes to SMT dynamics. We also confirmed that characteristic time is inversely proportional to electroconvection's control parameter.

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Phys. Rev. E 85, 030701(R)– Published 16 March, 2012
  • Received 30 November 2011

©2012 American Physical Society

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