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2D materials have many fascinating features, and here we report on the potential levitation of an ultra-thin magnetic material above a planar Au plate facilitated by repulsive Casimir forces. We considered a system consisting of an electric plate facing a magnetic plate. Through an investigation of the magnetic plate parameters, we show enhancement of the repulsion in a configuration where the plate has nm-scale thickness and a large permeability near ω=0. Additionally, high system temperatures can be used to enhance the effect. Magnetic 2D materials are thus excellent candidates for large-Casimir-repulsion systems and could be configured for levitation.
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Calum Shelden, Benjamin Spreng, Jeremy N. Munday, "Levitating ultra-thin magnetodielectric materials using repulsive Casimir forces," Proc. SPIE PC12423, 2D Photonic Materials and Devices VI, (17 March 2023); https://doi.org/10.1117/12.2647939