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Tunability of Critical Casimir Interactions by Boundary Conditions
Ursula Nellen, Laurent Helden, Clemens Bechinger
We experimentally demonstrate that critical Casimir forces in colloidal systems can be continuously tuned by the choice of boundary conditions. The interaction potential of a collo…
Critical Casimir effect in classical binary liquid mixtures
A. Gambassi, A. Maciolek, C. Hertlein +4
If a fluctuating medium is confined, the ensuing perturbation of its fluctuation spectrum generates Casimir-like effective forces acting on its confining surfaces. Near a continuou…
Relaxation of a Colloidal Particle into a Nonequilibrium Steady State
Valentin Blickle, Jakob Mehl, Clemens Bechinger
We study the relaxation of a single colloidal sphere which is periodically driven between two nonequilibrium steady states. Experimentally, this is achieved by driving the particle…