Introduction
Hendrik Brugt Gerhard Casimir (1909-2000)
"On the attraction between two perfectly conducting plates,"
H.B.G. Casimir, Proc. K. Ned. Akad. Wet. 51, 793 (1948)
Normal modes of the Electromagnetic (EM) field between (ideal metal) plates:
Quantum fluctuations of these modes, lead to a zero point energy: (see, e.g. Casimir effect)
This leads to a finite attractive force between plates,
"The Theory of Molecular Attractive Forces Between Solids,"
E.M. Lifshitz, Soviet Physics 2, 73 (1956),
Generalizes to parallel plates of arbitrary (frequency dependent) dielectrics; can be repulsive.
Experimental Verification
Early experiments provided at best qualitative support for an attractive force:
Abrikosova & Deriagin, Sov. Phys. JETP 4, 1957 (1957). [Silica lenses]
M.J. Sparnaay, Physica 24, 751 (1958). [Aluminum plates at distances H~1-100 nm]
J. N. Israelachvili & D. Tabor, Proc. R. Soc. Lon A 331, 19 (1972) [mica H>1µm]
van Blokland & Overbeek, J. Chem. Soc. F-T. I 74, 2637 (1978). [H~1-100 nm]
The era of high precision tests, started with S. K. Lamoreaux
"Demonstration of the Casimir Force in the 0.6 to 6µm Range," (using a torsion pendulum)
U. Mohideen (and collaborators at UC Riverside), using atomic force microscopy
"Precision Measurements of the Casimir Force from 0.1 to 0.9µm,"
T. Ederth (geometry of crossed cylinders)
"Template-stripped gold surfaces ... Casimir force in the 20–100-nm range,"
G. Bressi, G. Carugno, R. Onofrio, and G. Ruoso,
"Measurement of the Casimir Force between Parallel Metallic Surfaces,"
R.S. Decca, D. Lopez, E. Fischbach, and D.E. Krause, Phys. Rev. Lett. 91, 050402 (2003)
"Measurement of the Casimir Force between dissimilar metals,"
Applications
F. Michael Serry, Dirk Walliser, and G. Jordan Maclay,
"The role of the casimir effect in the static deflection and stiction of membrane strips in microelectromechanical systems (MEMS),"
J. Appl. Phys. 84, 2501 (1998)
E. Buks and M. L. Roukes,
"Stiction, adhesion energy, and the Casimir effect in micromechanical systems,"
Phys. Rev. B 63, 033402 (2001)
H. B. Chan, V. A. Aksyuk, R. N. Kleiman, D. J. Bishop, Federico Capasso,
"Quantum Mechanical Actuation of Microelectromechanical Systems by the Casimir Force,"
G. Palasantzas and J. Th. M. De Hosson,
"Pull-in characteristics of electromechanical switches in the presence of Casimir forces: Influence of self-affine surface roughness,"
Phys. Rev. B 72, 115426 (2005)
Fabrizio Pinto, InterstellarTechCorp
Challenges to high percision tests come from:
Geometry: non-planar shapes, roughness, ...
Material: non-ideal metals, impurities, ...
Environment: finite temperatures, ...