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Proceedings Paper

Avalanches and plasticity for colloids in a time dependent optical trap
Author(s): C. J. Olson Reichhardt; D. McDermott; C. Reichhardt
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Paper Abstract

With the use of optical traps it is possible to confine assemblies of colloidal particles in two-dimensional and quasi-one-dimensional arrays. Here we examine how colloidal particles rearrange in a quasi-one-dimensional trap with a time dependent confining potential. The particle motion occurs both through slow elastic uniaxial distortions as well as through abrupt large-scale two-dimensional avalanches associated with plastic rearrangements. During the avalanches the particle velocity distributions extend over a broad range and can be fit to a power law consistent with other studies of plastic events mediated by dislocations.

Paper Details

Date Published: 25 August 2015
PDF: 9 pages
Proc. SPIE 9548, Optical Trapping and Optical Micromanipulation XII, 954818 (25 August 2015); doi: 10.1117/12.2188561
Show Author Affiliations
C. J. Olson Reichhardt, Los Alamos National Lab. (United States)
D. McDermott, Los Alamos National Lab. (United States)
Wabash College (United States)
C. Reichhardt, Los Alamos National Lab. (United States)

Published in SPIE Proceedings Vol. 9548:
Optical Trapping and Optical Micromanipulation XII
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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