Avalanches and plasticity for colloids in a time dependent optical trap

C. J. Olson Reichhardt; D. McDermott; C. Reichhardt

doi:10.1117/12.2188561

25 August 2015 Avalanches and plasticity for colloids in a time dependent optical trap

C. J. Olson Reichhardt, D. McDermott, C. Reichhardt

Proceedings Volume 9548, Optical Trapping and Optical Micromanipulation XII; 954818 (2015) https://doi.org/10.1117/12.2188561
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

C. J. Olson Reichhardt, D. McDermott, and C. Reichhardt "Avalanches and plasticity for colloids in a time dependent optical trap", Proc. SPIE 9548, Optical Trapping and Optical Micromanipulation XII, 954818 (25 August 2015); https://doi.org/10.1117/12.2188561

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