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arXiv · 2210.17285

Origin of the repulsive Casimir force in giant polarization-interconversion materials

Zhou Li·Chinmay Khandekar
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Abstract

Achieving strong repulsive Casimir forces through engineered coatings can pave the way for micro- and nano-electromechanical applications where adhesive forces currently cause reliability issues. Here, we exploit Lifshitz theory to identify the requirements for repulsive Casimir forces in gyrotropic media for two limiting cases (ultra-strong gyroelectric and non-gyroelectric). We show that the origin of repulsive force in media with strong gyrotropy such as Weyl semi-metals arises from the giant interconversion of polarization of vacuum fluctuations.

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Zhou Li, Chinmay Khandekar. 2022-10-31. Origin of the repulsive Casimir force in giant polarization-interconversion materials. https://doi.org/10.1103/physrevapplied.16.044047

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