Controlling the casimir force via the electromagnetic properties of materials

Yaping Yang*, Ran Zeng, Hong Chen, Shi Yao ZHU, M. Suhail Zubairy

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

29 Citations (Scopus)


The control of the Casimir force between two parallel plates can be achieved through adjusting the frequency-dependent electromagnetic properties of materials of the two plates. We show that, for different plate separations, the main contribution to the Casimir force comes from different frequency regions: For smaller (larger) separation, it comes from the higher (lower) frequency region. When the separation of the plates increases, the Casimir force can vary from attractive to repulsive and/or vice versa, by selecting the two plates with suitable electromagnetic properties. We discuss how a restoring Casimir force, which varies from repulsive to attractive by increasing the separation, can be realized and that the stable equilibrium is formed at zero Casimir force.

Original languageEnglish
Article number022114
JournalPhysical Review A
Issue number2
Publication statusPublished - 16 Feb 2010

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics


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