Loading...
research article
Accounting for inertia effects to access the high-frequency microrheology of viscoelastic fluids
2014
We study the Brownian motion of microbeads immersed in water and in a viscoelastic wormlike micelles solution by optical trapping interferometry and diffusing wave spectroscopy. Through the mean-square displacement obtained from both techniques, we deduce the mechanical properties of the fluids at high frequencies by explicitly accounting for inertia effects of the particle and the surrounding fluid at short time scales. For wormlike micelle solutions, we recover the 3/4 scaling exponent for the loss modulus over two decades in frequency as predicted by the theory for semiflexible polymers.
Type
research article
Web of Science ID
WOS:000345928200001
Authors
Dominguez-Garcia, P.
•
Cardinaux, Frederic
•
•
•
Scheffold, Frank
•
Publication date
2014
Publisher
Published in
Volume
90
Issue
6
Article Number
060301(R)
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
February 20, 2015
Use this identifier to reference this record