Phys. Rev. Lett. 93, 120602 (2004) [4 pages]Entropy Production of Brownian Macromolecules with InertiaReceived 19 July 2003; published 16 September 2004 We investigate the nonequilibrium steady-state thermodynamics of single Brownian macromolecules with inertia under feedback control in an isothermal ambient fluid. With the control being represented by a velocity-dependent external force, we find such an open system can have a negative entropy production rate, and we develop a mesoscopic theory consistent with the second law. We propose an equilibrium condition and define a class of external force, which includes the transverse Lorentz force, leading to equilibrium. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.120602
DOI:
10.1103/PhysRevLett.93.120602
PACS:
05.70.Ln, 02.50.–r, 05.40.–a, 82.60.Qr
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