Measuring storage and loss moduli using optical tweezers: Broadband microrheology

被引：71

作者：

Tassieri, Manlio ^{[1
]}

Gibson, Graham M. ^{[2
]}

Evans, R. M. L. ^{[3
]}

Yao, Alison M. ^{[2
]}

Warren, Rebecca ^{[1
]}

Padgett, Miles J. ^{[2
]}

Cooper, Jonathan M. ^{[1
]}

机构：

[1] Univ Glasgow, Dept Elect & Elect Engn, Glasgow G12 8LT, Lanark, Scotland

[2] Univ Glasgow, Dept Phys & Astron, SUPA, Glasgow G12 8QQ, Lanark, Scotland

[3] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

来源：

PHYSICAL REVIEW E | 2010年 / 81卷 / 02期

基金：

英国工程与自然科学研究理事会; 英国生物技术与生命科学研究理事会;

关键词：

PARTICLE; RHEOLOGY; FORCE;

D O I：

10.1103/PhysRevE.81.026308

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

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.

引用

页数：5

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