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Proceedings Paper

Optically induced multi-particle structures: multi-dimensional energy landscapes
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Paper Abstract

Recent quantum electrodynamical studies on optically induced inter-particle potential energy surfaces have revealed unexpected features of considerable intricacy. The exploitation of these features presents a host of opportunities for the optical fabrication of nanoscale structures, based on the fine control of a variety of attractive and repulsive forces, and the torques that operate on particle pairs. Here we report an extension of these studies, exploring the first detailed potential energy surfaces for a system of three particles irradiated by a polarized laser beam. Such a system is the key prototype for developing generic models of multi-particle complexity. The analysis identifies and characterizes potential points of stability, as well as forces and torques that particles experience as a consequence of the electromagnetic fields, generated by optical perturbations. Promising results are exhibited for the optical fabrication of assemblies of molecules, nanoparticles, microparticles, and colloidal multi-particle arrays. The comprehension of mechanism that is emerging should help determine the fine principles of multi-particle optical assembly.

Paper Details

Date Published: 23 April 2008
PDF: 6 pages
Proc. SPIE 6988, Nanophotonics II, 69880L (23 April 2008); doi: 10.1117/12.781144
Show Author Affiliations
Luciana C. Dávila Romero, Univ. of East Anglia (United Kingdom)
Justo Rodríguez, Univ. of East Anglia (United Kingdom)
David L. Andrews, Univ. of East Anglia (United Kingdom)

Published in SPIE Proceedings Vol. 6988:
Nanophotonics II
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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