Distribution of injected power fluctuations in electroconvection

Tibor Tóth-Katona, J. T. Gleeson

Research output: Contribution to journalArticle

23 Citations (Scopus)


We report on the distribution spectra of the fluctations in the amount of power injected into a liquid crystal undergoing electroconvective flow. The probability distribution functions (PDFs) of the fluctuations as well as the magnitude of the fluctuations have been determined in a wide range of imposed stress both for unconfined and confined flow geometries. These spectra are compared to those found in other systems held far from equilibrium, and find that in certain conditions we obtain the universal PDF form reported by S.T. Bramwell [Phys. Rev. Lett. 84, 3744 (2000)]. Moreover, the PDF approaches this universal form via an interesting mechanism whereby the distribution’s negative tail evolves towards form in a different manner than the positive tail.

Original languageEnglish
JournalPhysical review letters
Issue number26
Publication statusPublished - 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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