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      Numerical simulation of Brownian particles in optical force fields

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      Author
      Volpe, G.
      Volpe, Giovanni
      Date
      2013
      Source 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 Paper
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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 motion
      Kramers transitions
      Numerical simulations
      Optical forces
      Stochastic differential equations
      Permalink
      http://hdl.handle.net/11693/27893
      Published Version (Please cite this version)
      http://dx.doi.org/10.1117/12.2022517
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      • Department of Physics 2299
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