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 2470-0053 (https://doi.org/10.1103/PhysRevE.81.026308)

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.

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• Item metadata

  Item type:	Article
  ID code:	30989
  Dates:	Date Event 18 February 2010 Published
  Subjects:	Science > Physics > Optics. Light
  Department:	Faculty of Science > Physics
  Depositing user:	Pure Administrator
  Date deposited:	13 May 2011 13:27
  Last modified:	08 Apr 2024 19:03
  URI:	https://strathprints.strath.ac.uk/id/eprint/30989