Citation:
Dixon, P. K. ; Nagel, S. R. ; Weitz, D. A. The length scale dependence of viscosity approaching the glass-transition in glycerol. Journal of Chemical Physics 1991, 94, 6924-6925. Copy at http://www.tinyurl.com/y5hhvgvk
 | dixon1991.pdf | 267 KB |
Abstract:
We measure the viscosity of glycerol by using photon correlation spectroscopy to observe the Brownian motion of small (∼100 nm) polystyrene spheres. By comparing the viscositymeasured with different size spheres, we can measure the length scale dependence of the viscosity as the liquid is cooled towards the glass. In contrast to published reports, we observe no spatial dispersion in the viscosity.