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Micromechanics of Dipolar Chains Using Optical TweezersHere we present our initial study of the micromechanical properties of dipolar chains and columns in a magnetorheological (MR) suspension. Using dual-trap optical tweezers, we are able to directly measure the deformation of the dipolar chains parallel and perpendicular to the applied magnetic field. We observe the field dependence of the mechanical properties such as resistance to deformation, chain reorganization, and rupturing of the chains. These forms of energy dissipation are important for understanding and tuning the yield stress and rheological behavior of an MR suspension.
Document ID
20000013737
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Furst, Eric M.
(Stanford Univ. Stanford, CA United States)
Gast, Alice P.
(Stanford Univ. Stanford, CA United States)
Date Acquired
August 19, 2013
Publication Date
May 17, 1999
Publication Information
Publication: Physical Review Letters
Publisher: American Physical Society
Volume: 82
Issue: 20
ISSN: 0031-9007
Subject Category
Atomic And Molecular Physics
Funding Number(s)
CONTRACT_GRANT: NAG3-1887
PROJECT: RTOP 962-24
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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