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Proceedings Paper

Simulation of active Brownian particles in optical potentials
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Paper Abstract

Optical forces can affect the motion of a Brownian particle. For example, optical tweezers use optical forces to trap a particle at a desirable position. Unlike passive Brownian particles, active Brownian particles, also known as microswimmers, propel themselves with directed motion and thus drive themselves out of equilibrium. Understanding their motion in a confined potential can provide insight into out-of-equilibrium phenomena associated with biological examples such as bacteria, as well as with artificial microswimmers. We discuss how to mathematically model their motion in an optical potential using a set of stochastic differential equations and how to numerically simulate it using the corresponding set of finite difference equations.

Paper Details

Date Published: 16 September 2014
PDF: 5 pages
Proc. SPIE 9164, Optical Trapping and Optical Micromanipulation XI, 91642S (16 September 2014); doi: 10.1117/12.2061049
Show Author Affiliations
Giorgio Volpe, Lab. Kastler Brossel, CNRS, Univ. Pierre et Marie Curie (France)
Sylvain Gigan, Lab. Kastler Brossel, CNRS, Univ. Pierre et Marie Curie (France)
Giovanni Volpe, Bilkent Univ. (Turkey)


Published in SPIE Proceedings Vol. 9164:
Optical Trapping and Optical Micromanipulation XI
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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