Journal
SOFT MATERIALS
Volume 8, Issue 2, Pages 102-113Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15394451003708549
Keywords
Colloids; Dynamic light scattering; Film drying; Heterogeneous dynamics; Jamming; Speckle imaging
Categories
Funding
- Swiss National Science Foundation [200020-117762/111824/109137]
- Marie Curie network [MRTN-CT2003-504712]
Ask authors/readers for more resources
We report on a new type of experiment that enables us to monitor spatially and temporally heterogeneous dynamic properties in complex fluids. Our approach is based on the analysis of near-field speckles produced by light diffusely reflected from the superficial volume of a strongly scattering medium. By periodic modulation of an incident speckle beam we obtain pixel-wise ensemble averages of the structure function coefficient, a measure of the dynamic activity. To illustrate the application of our approach we follow the different stages in the drying process of a colloidal thin film. We show that we can access ensemble averaged dynamic properties on length scales as small as ten micrometers over the full field of view.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available