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Driving innovations in manufacturing: Open Access research from DMEM

Strathprints makes available Open Access scholarly outputs by Strathclyde's Department of Design, Manufacture & Engineering Management (DMEM).

Centred on the vision of 'Delivering Total Engineering', DMEM is a centre for excellence in the processes, systems and technologies needed to support and enable engineering from concept to remanufacture. From user-centred design to sustainable design, from manufacturing operations to remanufacturing, from advanced materials research to systems engineering.

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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.