dorsal/arxiv
View SchemaThermal Fluctuations, Subcritical Bifurcation, and Nucleation of Localized States in Electroconvection
| Authors | Urs Bisang, Guenter Ahlers |
|---|---|
| Categories | |
| ArXiv ID | patt-sol/9801001 |
| URL | https://arxiv.org/abs/patt-sol/9801001 |
| DOI | 10.1103/PhysRevLett.80.3061 |
Abstract
Measurements of the mean-square amplitude of thermally-induced fluctuations of a thin layer of the nematic liquid crystal I52 subjected to a voltage V < Vc are reported. They yield the limit of stability Vc of the spatially uniform conduction state to infinitesimal perturbations. Localized long-lived convecting structures known as worms form spontaneously from the fluctuations for V well below Vc. This, as well as measurements of the lifetime of the conduction state for V < Vc, suggests a thermally-activated mechanism of worm formation; but a theory for this non-potential system is lacking.
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"abstract": "Measurements of the mean-square amplitude of thermally-induced fluctuations\nof a thin layer of the nematic liquid crystal I52 subjected to a voltage V \u003c Vc\nare reported. They yield the limit of stability Vc of the spatially uniform\nconduction state to infinitesimal perturbations. Localized long-lived\nconvecting structures known as worms form spontaneously from the fluctuations\nfor V well below Vc. This, as well as measurements of the lifetime of the\nconduction state for V \u003c Vc, suggests a thermally-activated mechanism of worm\nformation; but a theory for this non-potential system is lacking.",
"arxiv_id": "patt-sol/9801001",
"authors": [
"Urs Bisang",
"Guenter Ahlers"
],
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"patt-sol",
"nlin.PS"
],
"doi": "10.1103/PhysRevLett.80.3061",
"title": "Thermal Fluctuations, Subcritical Bifurcation, and Nucleation of Localized States in Electroconvection",
"url": "https://arxiv.org/abs/patt-sol/9801001"
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