Critical Casimir effect near the (3)He-(4)He tricritical point |
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| Authors: | Garcia R Chan M H W |
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| Institution: | Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA. |
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| Abstract: | We present capacitance measurements of the equilibrium thickness of (3)He-(4)He mixture films as a function of temperature and concentration. The films are adsorbed on a Cu substrate situated above bulk liquid mixture. As we scan across the tricritical point, we observe a thickening of the film indicating the presence of a repulsive critical Casimir force. |
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