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Proceedings Paper

Building, bending, and breaking colloidal microstructures with optical tweezers (Conference Presentation)
Author(s): Eric Furst

Paper Abstract

The fundamental problem of complex fluid rheology is one of microstructure engineering. The rheology derives from how this microstructure deforms, relaxes, or breaks. Optical tweezers have become exceptionally useful tools for measuring the interactions and mechanics of on microscopic length scales to provide critical insight into the rheology of colloidal suspensions. In this talk, I will discuss how laser tweezer micromanipulation enables us to build, prod, deform, and break microstructures to gain insight into the mechanics and flow behavior of colloidal gels. Our experiments include measurements of the bending mechanics of assembled colloidal aggregates, the measurement of "bond rupture" between sticky particles, and probing the strain propagation in cluster gels.

Paper Details

Date Published: 9 September 2019
Proc. SPIE 11083, Optical Trapping and Optical Micromanipulation XVI, 110830D (9 September 2019); doi: 10.1117/12.2529944
Show Author Affiliations
Eric Furst, Univ. of Delaware (United States)

Published in SPIE Proceedings Vol. 11083:
Optical Trapping and Optical Micromanipulation XVI
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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