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)
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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 type: Article ID code: 30989 Dates: DateEvent18 February 2010PublishedSubjects: Science > Physics > Optics. Light Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 13 May 2011 13:27 Last modified: 02 Aug 2024 20:28 URI: https://strathprints.strath.ac.uk/id/eprint/30989