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Proceedings Paper

Optically driven colloidal microscopic Taylor-Couette cell (Conference Presentation)
Author(s): Antonio Ortiz-Ambriz; Pietro Tierno

Paper Abstract

We present an optically driven colloidal microscopic rheometer based on the recent work of Williams et al. The interplay between magnetic and optical forces allows us to experimentally build a two dimensional Taylor-Couette cell and to explore the rheological properties of confined colloidal suspensions at a microscopic scale. Despite the discrete nature of the system, we observe local instabilities in the response of the layers’ flow to the applied shear, which is a characteristic of shear banding in larger systems. Besides the rheological phenomena, these type of experiments can be useful to develop the understanding of non-equilibrium many body systems.

Paper Details

Date Published: 25 September 2017
Proc. SPIE 10347, Optical Trapping and Optical Micromanipulation XIV, 103471R (25 September 2017); doi: 10.1117/12.2275610
Show Author Affiliations
Antonio Ortiz-Ambriz, Univ. de Barcelona (Spain)
Pietro Tierno, Univ. de Barcelona (Spain)

Published in SPIE Proceedings Vol. 10347:
Optical Trapping and Optical Micromanipulation XIV
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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