Abstract.
We have studied binary two-dimensional (2D) mixtures of superparamagnetic colloidal particles interacting through magnetic dipole moments, which were induced by an external magnetic field B. By tuning B the effective system temperature could be widely adjusted. Time-dependent particle coordinates measured by video-microscopy provide radial pair-distribution functions, mean-square displacements as well as evidence for heterogeneous dynamics. Characteristic features of 3D glass formers are observed experimentally in 2D for the first time.
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König, H., Hund, R., Zahn, K. et al. Experimental realization of a model glass former in 2D. Eur. Phys. J. E 18, 287–293 (2005). https://doi.org/10.1140/epje/e2005-00034-9
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DOI: https://doi.org/10.1140/epje/e2005-00034-9