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Measuring storage and loss moduli using optical tweezers: Broadband microrheology

Tassieri, Manlio and Gibson, Graham M. and Evans, R. M. L. and Yao, Alison M. and Warren, Rebecca and Padgett, Miles J. and Cooper, Jonathan M. (2010) Measuring storage and loss moduli using optical tweezers: Broadband microrheology. Physical Review E, 81 (2). 026308. ISSN 1539-3755

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Abstract

We present an experimental procedure to perform broadband microrheological measurements with optical tweezers. A generalized Langevin equation is adopted to relate the time-dependent trajectory of a particle in an imposed flow to the frequency-dependent moduli of the complex fluid. This procedure allows us to measure the material linear viscoelastic properties across the widest frequency range achievable with optical tweezers.

Item type: Article
ID code: 30989
Keywords: complex fluids, particle, rheology, force, Optics. Light, Statistical and Nonlinear Physics, Statistics and Probability, Condensed Matter Physics
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 13 May 2011 14:27
    Last modified: 27 Mar 2014 09:20
    URI: http://strathprints.strath.ac.uk/id/eprint/30989

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