2001/06/12 by Walter I. Goldburg, W. I. Goldburg, Yadin Y. Goldschmidt +2 · 60 citations
Chemistry · Computer Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Chaotic #Chemistry #Condensed matter physics #Convection #Dissipation #Electrical resistivity and conductivity #Liquid crystal #Materials science #Mechanics #Nonlinear Dynamics and Pattern Formation #Phase transition #Physics #Quantum mechanics #Steady state (chemistry) #Theoretical and Computational Physics #Thermodynamics #Threshold voltage #Voltage #nlin.CD
paper · pdf · doi:10.1103/physrevlett.87.245502
published in Physical Review Letters 87(24), 245502 (American Physical Society) · 4 pages, 3 figures, revtex format
arxiv created 2001/06/12 · openalex publication_date 2001/11/26 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this experiment a steady-state current is maintained through a liquid-crystal thin film. When the applied voltage is increased through a threshold, a phase transition is observed to a convective state characterized by the chaotic motion of rolls. Above the threshold, an increase in power consumption is observed that is manifested by an increase in the mean conductivity. A sharp increase in the ratio of the power fluctuations to the mean power dissipated is observed above the transition. This ratio is compared to the predictions of the fluctuation theorem of Gallavotti and Cohen using an effective temperature associated with the rolls' chaotic motion.