Soft Surface, Hard Core: Perfect Glass from Ultrasoft Colloids

The glassy state is still something of a mystery. Recently, Jülich scientists discovered a relation between the motion of individual particles and the flow properties up to the point at which the material vitrifies. This relation is also described by the Stokes-Einstein equation, which, however, generally loses its validity long before the glass transition. Extremely soft colloids ensure that this relation is maintained.

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