Thermal fluctuations in nanofluidic transport.
نویسندگان
چکیده
We explore the impact of thermal fluctuations on nanofluidic transport. We develop a generic description of the stochastic motion of a fluid confined in a nanopore, on the basis of the fluctuating hydrodynamics framework. The center of mass of the confined fluid is shown to perform a non-markovian random walk, whose diffusion coefficient depends on the nanopore geometrical characteristics and boundary slip at its surface. We discuss the implications of this brownian-like motion of hydrodynamic degrees of freedom in two different contexts. First, we show that hydrodynamic fluctuations can lead to a strongly enhanced diffusion of particles confined in a nanopore. Second, we extend our results to account for the hydrodynamic contribution to electrical noise in charged nanopores.
منابع مشابه
Investigation of the thermal effects in nanofluidic transport and their application in gating
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ورودعنوان ژورنال:
- Physical review letters
دوره 109 2 شماره
صفحات -
تاریخ انتشار 2012