16 September 2014 Simulation of active Brownian particles in optical potentials
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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.
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Giorgio Volpe, Giorgio Volpe, Sylvain Gigan, Sylvain Gigan, Giovanni Volpe, Giovanni Volpe, "Simulation of active Brownian particles in optical potentials", Proc. SPIE 9164, Optical Trapping and Optical Micromanipulation XI, 91642S (16 September 2014); doi: 10.1117/12.2061049; https://doi.org/10.1117/12.2061049


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