| Issue |
EPL
Volume 88, Number 6, December 2009
|
|
|---|---|---|
| Article Number | 66004 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/88/66004 | |
| Published online | 04 January 2010 | |
Dynamics of particles and cages in an experimental 2D glass former
Fachbereich Physik, Universität Konstanz - Universitätsstrasse 10, 78457 Konstanz, Germany, EU
Corresponding author: peter.keim@uni-konstanz.de
Received:
30
July
2009
Accepted:
25
November
2009
We investigate the dynamics of a glass-forming 2D colloidal mixture and show the existence of collective motions of the particles. We introduce a mean square displacement MSD with respect to the nearest neighbors which shows remarkable deviations from the usual MSD quantifying the individual motion of our particles. Combined with the analysis of the self-part of the Van Hove function this indicates a coupled motion of particles with their cage as well as intra-cage hopping processes.
PACS: 64.70.kj – Glasses / 68.90.+g – Other topics in structure, and nonelectronic properties of surfaces and interfaces; thin films and low-dimensional structures / 82.70.-y – Disperse systems; complex fluids
© EPLA, 2009
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