Dresden 2003 – scientific programme
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DY: Dynamik und Statistische Physik
DY 31: Glasses Ib (joined session FV DF/DY)
DY 31.8: Talk
Tuesday, March 25, 2003, 12:00–12:15, HSZ/403
New glass theory based on local structure analysis — •Hans König — Fachbereich Physik, Universität Konstanz, 78457 Konstanz
Using measured time-dependent particle positions of a binary 2D colloidal mixture with a repulsive (1/r3) potential, new methods are presented which allow us to analyse the local structure and the packing of the particles in the system. Hexagonal, 10- or 4-fold symmetric clusters have been observed, and collective motions – responsible for heterogeneous relaxations – have been investigated. From that point of view the question arises of how the local structure influences the properties of the colloidal glass. These observations lead to a new way of explaining the glass transition.