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29 August 2008 Anisotropic particle motion in optical landscapes modeled via the T-matrix optical scattering approach
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Abstract
Optical manipulation of nano- and micro-scale particles via optical tweezers and optical landscapes continues to be of great interest in several fields, reflected by the myriad experimental pursuits suggesting selective and parallel control over particles of anisotropic shape (blood cells, nanorods, etc.). Our work here approaches the goal of a complete model of these phenomena by means of optical scattering principles and, specifically, the T-matrix method. Here we describe the salient features of our model, which tends toward a complete and consistent modeling scheme for determining the behavior of dielectric, polarizable, mesoscale particles of anisotropic shape in arbitrary intensity gradients. We explore forces and torques caused by periodic optical landscapes as well as torques induced by the polarization orientation of the electric field.
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Brandon L. Conover and Michael J. Escuti "Anisotropic particle motion in optical landscapes modeled via the T-matrix optical scattering approach", Proc. SPIE 7038, Optical Trapping and Optical Micromanipulation V, 703819 (29 August 2008); https://doi.org/10.1117/12.795666
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