Stable Optical Trapping Based on Optical Binding Forces

Tomasz M. Grzegorczyk, Brandon A. Kemp, and Jin Au Kong
Phys. Rev. Lett. 96, 113903 – Published 24 March 2006

Abstract

Various trapping configurations have been realized so far, either based on the scattering force or the gradient force. In this Letter, we propose a new trapping regime based on the equilibrium between a scattering force and optical binding forces only. The trap is realized from the interaction between a single plane wave and a series of fixed small particles, and is efficient at trapping multiple free particles. The effects are demonstrated analytically upon computing the exact scattering from a collection of cylindrical particles and calculating the Lorentz force on each free particle via the Maxwell stress tensor.

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  • Received 23 September 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.113903

©2006 American Physical Society

Authors & Affiliations

Tomasz M. Grzegorczyk, Brandon A. Kemp, and Jin Au Kong

  • Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

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Issue

Vol. 96, Iss. 11 — 24 March 2006

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