title: Absolute measurement of laminar shear rate using photon correlation spectroscopy.
abstract: Measurement of the components of the shear rate tensor S in a fluid provides insight into the properties of that fluid. We detail a refined method for performing direct and absolute measurement of the components of S in a fluid using photon correlation spectroscopy, which we show gives an absolute, accurate, noninvasive measurement of the shear rate from a single measurement at a single location. We demonstrate this method in a cone and plate rheometer, where we obtain measurements of the shear rate of water in 10 s with an absolute accuracy of 2%.
authors.forename: Elliot
authors.initials: E
authors.lastname: Jenner
authors.forename: Brian
authors.initials: B
authors.lastname: D'Urso