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William, Pineros
첨단연성물질 연구단
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Inverse design of nonequilibrium steady states: A large-deviation approach

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Title
Inverse design of nonequilibrium steady states: A large-deviation approach
Author(s)
William D. Pineros; Tsvi Tlusty
Publication Date
2021-02
Journal
PHYSICAL REVIEW E, v.103, no.2
Publisher
AMER PHYSICAL SOC
Abstract
The design of small scale nonequilibrium steady states (NESS) is a challenging, open ended question. While similar equilibrium problems are tractable using standard thermodynamics, a generalized description for nonequilibrium systems is lacking, making the design problem particularly difficult. Here we show we can exploit the large-deviation behavior of a Brownian particle and design a variety of geometrically complex steady-state density distributions and flux field flows. We achieve this design target from direct knowledge of the joint large-deviation functional for the empirical density and flow, and a "relaxation" algorithm on the desired target states via adjustable force field parameters. We validate the method by replicating analytical results, and demonstrate its capacity to yield complex prescribed targets, such as rose-curve or polygonal shapes on the plane. We consider this dynamical fluctuation approach a first step towards the design of more complex NESS where general frameworks are otherwise still lacking.
URI
https://pr.ibs.re.kr/handle/8788114/9237
DOI
10.1103/PhysRevE.103.022101
ISSN
2470-0045
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > 1. Journal Papers (저널논문)
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