Autonomously Probing Viscoelasticity in Disordered Suspensions
Autonomously Probing Viscoelasticity in Disordered Suspensions
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2020
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Physical Review Letters ; 125 (2020), 25. - 258002. - American Physical Society (APS). - ISSN 0031-9007. - eISSN 1079-7114
Abstract
Recent experiments show a strong rotational diffusion enhancement for self-propelled microrheological probes in colloidal glasses. Here, we provide microscopic understanding using simulations with a frictional probe-medium coupling that converts active translation into rotation. Diffusive enhancement emerges from the medium’s disordered structure and peaks at a second-order transition in the number of contacts. Our results reproduce the salient features of the colloidal glass experiment and support an effective description that is applicable to a broader class of viscoelastic suspensions.
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ABAURREA-VELASCO, Clara, Celia LOZANO, Clemens BECHINGER, Joost DE GRAAF, 2020. Autonomously Probing Viscoelasticity in Disordered Suspensions. In: Physical Review Letters. American Physical Society (APS). 125(25), 258002. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.125.258002BibTex
@article{AbaurreaVelasco2020Auton-52315, year={2020}, doi={10.1103/PhysRevLett.125.258002}, title={Autonomously Probing Viscoelasticity in Disordered Suspensions}, number={25}, volume={125}, issn={0031-9007}, journal={Physical Review Letters}, author={Abaurrea-Velasco, Clara and Lozano, Celia and Bechinger, Clemens and de Graaf, Joost}, note={Article Number: 258002} }
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