Achieving a Strongly Temperature-Dependent Casimir Effect

Details Achieving a Strongly Temperature-Dependent Casimir Effect Achieving a Strongly Temperature-Dependent Casimir Effect

2010-04-15

arxiv.org/abs/1004.2733v1

Phys.Rev.Lett.105:060401,2010

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.105.060401

We propose a method of achieving large temperature sensitivity in the Casimir force that involves measuring the stable separation between dielectric objects immersed in fluid. We study the Casimir force between slabs and spheres using realistic material models, and find large > 2nm/K variations in their stable separations (hundreds of nanometers) near room temperature. In addition, we analyze the effects of Brownian motion on suspended objects, and show that the average separation is also sensitive to changes in temperature . Finally, this approach also leads to rich qualitative phenomena, such as irreversible transitions, from suspension to stiction, as the temperature is varied.

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