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Title: Realization of nonequilibrium thermodynamic processes using external colored noise
Author: Mestres, Pau
Martinez, Ignacio A.
Ortiz-Ambriz, Antonio
Rica, Raul A.
Roldan, Edgar
Keywords: Mecànica estadística
Matèria condensada
Statistical mechanics
Condensed matter
Issue Date: 16-Sep-2014
Publisher: American Physical Society
Abstract: We investigate the dynamics of single microparticles immersed in water that are driven out of equilibrium in the presence of an additional external colored noise. As a case study, we trap a single polystyrene particle in water with optical tweezers and apply an external electric field with flat spectrum but a finite bandwidth of the order of kHz. The intensity of the external noise controls the amplitude of the fluctuations of the position of the particle and therefore of its effective temperature. Here we show, in two different nonequilibrium experiments, that the fluctuations of the work done on the particle obey the Crooks fluctuation theorem at the equilibrium effective temperature, given that the sampling frequency and the noise cutoff frequency are properly chosen.
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It is part of: Physical Review E, 2014, vol. 90, num. 032116, p. 032116-1-032116-8
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ISSN: 1539-3755
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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