School of Chemistry
University of Sydney, NSW 2006 Australia
Aust. J. Chem. 54, 477-485 (2001)
Abstract
A summary is given of the authors' recent research on
viscoelastic theory and its application
to colloid probe atomic force microscopy.
A general computational approach for the interaction of
viscoelastic colloids interacting with realistic
surface forces of extended range is outlined,
and the origins of velocity and time dependent effects
including hysteresis is discussed.
A general method for establishing the zero of separation
in atomic force microscopy of deformable bodies is described
and utilised in force measurements made on viscoelastic
poly-(dimethylsiloxane) colloid particles.
A quantitative analysis of the velocity and load dependence
of the hysteresis in the measurements yields the viscoelastic
parameters of the colloid.
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