Numerical simulation of Brownian particles in optical force fields
Author
Volpe, G.
Volpe, Giovanni
Date
2013Source Title
Proceedings of SPIE Vol. 8810, Optical Trapping and Optical Micromanipulation X
Print ISSN
0277-786X
Publisher
SPIE
Volume
8810
Pages
1 - 7
Language
English
Type
Conference PaperItem Usage Stats
150
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113
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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. Using more complex force fields it is possible to generate more complex configurations. For example, by using two optical traps placed next to each other, it is possible to obtain a bistable potential where a particle can jump between the two potentials with a characteristic time scale. In this proceeding, we discuss a simple finite difference algorithm that can be used to simulate the motion of a Brownian particle in a one-dimensional field of optical forces.
Keywords
Brownian motionKramers transitions
Numerical simulations
Optical forces
Stochastic differential equations