Arrangement and Dynamics of Colloids in Optical Light Fields
Arrangement and Dynamics of Colloids in Optical Light Fields
Colloidal particles can be manipulated using light, which is exploited in optical tweezers. We use tweezer-like devices to impose external potentials on colloids, but create extended optical fields. They result in modulated (e.g. sinusoidal) or random potential energy landscapes, which might change with time. We are interested in how these potentials affect the arrangement and the dynamics of individual as well as interacting colloidal particles. For example, new light-induced phases emerge and intriguing dynamics, resembling glass-like behaviour, are displayed.
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