2021
DOI: 10.1103/physreve.104.044101
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Energy harvesting from anisotropic fluctuations

Abstract: Anisotropy in temperature, chemical potential, or ion concentration, provides the fuel that feeds dynamical processes that sustain life. At the same time, anisotropy is a root cause of incurred losses manifested as entropy production. In this work we consider a rudimentary model of an overdamped stochastic thermodynamic system in an anisotropic temperature heat bath, and study minimum entropy production when driving the system between thermodynamic states in finite time.While entropy production in isotropic te… Show more

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Cited by 25 publications
(13 citation statements)
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“…This therefore introduces a new optimization principle wherein optimally efficient cycles must minimize the average value of g C over the region they enclose in Clausius space. In a pioneering study, a similar bound was recently recovered for the specific case of the Brownian gyrator [26], though we highlight that Eq. ( 18) applies generically.…”
supporting
confidence: 70%
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“…This therefore introduces a new optimization principle wherein optimally efficient cycles must minimize the average value of g C over the region they enclose in Clausius space. In a pioneering study, a similar bound was recently recovered for the specific case of the Brownian gyrator [26], though we highlight that Eq. ( 18) applies generically.…”
supporting
confidence: 70%
“…Following the second law, dΣ ≥ 0 such that the inequality follows directly and the unity bound can only be saturated for quasistatic, reversible engines. This definition of efficiency has gained traction in the study of finite-time heat engines [20,21,26], and a comparable definition is standard for monothermal cycles, e.g. in active matter or chemical transduction contexts [27][28][29][30].…”
mentioning
confidence: 99%
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“…(2) The periodic variation of the capacitances that generates an attractive periodic orbit in the space of probability densities has been previously studied [24]. In that case, the periodic orbit is specified by a periodic covariance matrix for the charge vector q t .…”
Section: Brownian Gyratormentioning
confidence: 99%
“…Other works focused on underdamped mesoscopic systems [20], non-Markovian noise [21], active reservoirs [22], and the effect of external forces [23] on such two-dimensional stochastic systems. More recently, [24] considered the energetics of the cyclic operation of Brownian gyrators and derived theoretical bounds on efficiency and power that can be extracted from the anisotropy of the temperature field.…”
Section: Introductionmentioning
confidence: 99%