Characterizing Potentials by a Generalized Boltzmann Factor

Details Characterizing Potentials by a Generalized Boltzmann Factor Characterizing Potentials by a Generalized Boltzmann Factor

2007-05-02

arxiv.org/abs/0705.0323v1

Phys. Rev. E 75, 060101 (2007)

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevE.75.060101

Based on the concept of a nonequilibrium steady state, we present a novel method to experimentally determine energy landscapes acting on colloidal systems. By measuring the stationary probability distribution and the current in the system, we explore potential landscapes with barriers up to several hundred $\kT$. As an illustration, we use this approach to measure the effective diffusion coefficient of a colloidal particle moving in a tilted potential.

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