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OptSortSph: Optical Sorting in a Standing Wave Field Calculated with Effective Velocities and Diffusion Constants

Published

Author(s)

Zachary H. Levine, John J. Curry

Abstract

Recently, as part of a study of the ability of a Gaussian standing-wave interference field to sort small dielectric spheres entrained in a moving fluid, we implemented a two-length-scale method to determine the trajectories of the particles. In the first step, effective velocities and diffusion constants are determined by solving the Fokker-Planck equation in a force field determined by the Maxwell stress tensor. In the second step, these effective constants of motion are used to predict positions of particles swept across the interference field. Here, we present the code which was used in a companion article (Ref. [1]).
Citation
Journal of Research (NIST JRES) -
Volume
121

Keywords

optical sorting, dielectric spheres, Mie scattering, gradient force, standing-wave laser field

Citation

Levine, Z. and Curry, J. (2016), OptSortSph: Optical Sorting in a Standing Wave Field Calculated with Effective Velocities and Diffusion Constants, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/jres.121.020 (Accessed April 14, 2024)
Created September 7, 2016, Updated June 2, 2021