Abstract

The Casimir force between neutral plates is attractive. For the Casimir force to be really useful one must be able to switch from attraction to repulsion. Exploiting the experimentalist’s ability to change the sign of the charge carriers in graphene, we show how the sign of the Fresnel reflection coefficients can be reversed. This gives rise to a Casimir force between a metal sheet and graphene, which can be either attractive or repulsive; we illustrate it for a dielectric cylinder and graphene sheet.

© 2014 Optical Society of America

Repulsive Casimir force between hyperbolic metamaterials

Ge Song, Ran Zeng, M. Al-Amri, Jingping Xu, Chengjie Zhu, Pengfei He, and Yaping Yang
Opt. Express 26(26) 34461-34473 (2018)

Casimir force between two plasmonic metallic plates from a real frequency perspective

Hideo Iizuka and Shanhui Fan
J. Opt. Soc. Am. B 36(11) 2981-2988 (2019)

Casimir torque and force in anisotropic saturated ferrite three-layer structure

Ran Zeng, Chi Wang, Xiaodong Zeng, Haozhen Li, Shuna Yang, Qiliang Li, and Yaping Yang
Opt. Express 28(5) 7425-7441 (2020)

Exterior tuning and switching of non-equilibrium Casimir force

Hideo Iizuka and Shanhui Fan
J. Opt. Soc. Am. B 38(1) 151-158 (2021)

Casimir–Polder forces in inhomogeneous backgrounds

Kimball A. Milton
J. Opt. Soc. Am. B 36(4) C41-C45 (2019)