On the measurement of the Casimir torque

Xiang Chen, John Spence

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


We discuss the possibility of measuring the recently proposed Casimir torque between bi-refringent crystals, using a torsion pendulum in dark vacuum. By simulation, we analyze the effects of precession, surface polish, and torque due to stray charge. We determine the experimental conditions under which the torque might be measured, and conclude that these are achievable with modern instrumentation, and we give an estimate of errors.

Original languageEnglish (US)
Pages (from-to)2064-2071
Number of pages8
JournalPhysica Status Solidi (B) Basic Research
Issue number9
StatePublished - Sep 2011


  • Birefringent crystals
  • Casimir torque effect
  • Local surface charges
  • Stray charge

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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