Journal
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
Volume 12, Issue 1, Pages 43-49Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.cocis.2007.03.004
Keywords
high frequency theology; microrheology; viscoelasticity; polymers; surfactants; colloidal dispersions
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High frequency rheometry here defined as measurement of dynamic shear moduli in the frequency range beyond that accessible by conventional rotational rheometry (f > 10(2) Hz) provides insight into microstructure and local dynamics of complex fluids. We review the mechanical devices as well as the optical and other microrheological techniques available today, discussing especially the frequency and modulus range the different methods cover. We also emphasise on the comparison between optical and mechanical methods and finally, on the microscopic structural and dynamic information extracted from high frequency theology on complex fluids like polymers, surfactants, biomaterials and colloidal dispersions. (c) 2007 Elsevier Ltd. All rights reserved.
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