Measurement of the Casimir force between dissimilar metals -: art. no. 050402

被引：273

作者：

Decca, RS ^{[1
]}

López, D

Fischbach, E

Krause, DE

机构：

[1] Indiana Univ Purdue Univ, Dept Phys, Indianapolis, IN 46202 USA

[2] Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

[3] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA

[4] Wabash Coll, Dept Phys, Crawfordsville, IN 47933 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.91.050402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The first precise measurement of the Casimir force between dissimilar metals is reported. The attractive force, between a Cu layer evaporated on a microelectromechanical torsional oscillator and an Au layer deposited on an Al2O3 sphere, was measured dynamically with a noise level of 6 fN/rootHz. Measurements were performed for separations in the 0.2-2 mum range. The results agree to better than 1% in the 0.2-0.5 mum range with a theoretical model that takes into account the finite conductivity and roughness of the two metals. The observed discrepancies, which are much larger than the experimental precision, can be attributed to a lack of a complete characterization of the optical properties of the specific samples used in the experiment.

引用

页数：4

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