Structure and Transport Anomalies in Soft Colloids

Samanvaya Srivastava, Lynden A. Archer, and Suresh Narayanan
Phys. Rev. Lett. 110, 148302 – Published 3 April 2013

Abstract

Anomalous trends in nanoparticle correlation and motion are reported in soft nanoparticle suspensions using static and dynamic x-ray scattering measurements. Contrary to normal expectations, we find that particle-particle correlations decrease and particle dynamics become faster as volume fraction rises above a critical particle loading associated with overlap. Our observations bear many similarities to the cascade of structural and transport anomalies reported for complex, network forming molecular fluids such as water, and are argued to share similar physical origins.

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  • Received 10 November 2012

DOI:https://doi.org/10.1103/PhysRevLett.110.148302

© 2013 American Physical Society

Authors & Affiliations

Samanvaya Srivastava and Lynden A. Archer*

  • School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, USA

Suresh Narayanan

  • Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA

  • *laa25@cornell.edu

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Vol. 110, Iss. 14 — 5 April 2013

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