Chan H B, Aksyuk V A, Kleiman R N, Bishop D J, Capasso F
Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974, USA.
Phys Rev Lett. 2001 Nov 19;87(21):211801. doi: 10.1103/PhysRevLett.87.211801. Epub 2001 Oct 31.
The Casimir force between uncharged metallic surfaces originates from quantum-mechanical zero-point fluctuations of the electromagnetic field. We demonstrate that this quantum electrodynamical effect has a profound influence on the oscillatory behavior of microstructures when surfaces are in close proximity (< or =100 nm). Frequency shifts, hysteretic behavior, and bistability caused by the Casimir force are observed in the frequency response of a periodically driven micromachined torsional oscillator.
不带电金属表面之间的卡西米尔力源自电磁场的量子力学零点涨落。我们证明，当表面靠得很近（≤100纳米）时，这种量子电动力学效应会对微观结构的振荡行为产生深远影响。在一个周期性驱动的微机械扭转振荡器的频率响应中，观察到了由卡西米尔力引起的频率偏移、滞后行为和双稳性。
