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Stronger Limits on Hypothetical Yukawa Interactions in the 30-8000 nm Range.
- Y-J Chen, W. Tham, D. Krause, D. López, E. Fischbach, R. Decca
- PhysicsPhysical review letters
- 27 October 2014
The technique employed subtracts the otherwise dominant Casimir force at the outset and leads to a significant improvement over existing limits on the strength (relative to gravity) of a putative force in the 40-8000 nm interaction range.
Tests of new physics from precise measurements of the Casimir pressure between two gold-coated plates
- R. Decca, D. López, E. Fischbach, G. L. Klimchitskaya, D. Krause, V. Mostepanenko
- 23 April 2007
A micromechanical torsion oscillator has been used to strengthen the limits on new Yukawa forces by determining the Casimir pressure between two gold-coated plates. By significantly reducing the…
Measurement of the Casimir force between dissimilar metals.
The first precise measurement of the Casimir force between dissimilar metals is reported and the results agree to better than 1% in the 0.2-2 micro m range with a theoretical model that takes into account the finite conductivity and roughness of the two metals.
- G. Palasantzas, D. Dalvit, R. Decca, V. Svetovoy, A. Lambrecht
- EducationJournal of physics. Condensed matter : an…
- 3 June 2015
Astrid Lambrecht Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4, place Jussieu Case 74, 75252 Paris Cedex 05, France Quantum theory…
Constraining New Forces in the Casimir Regime Using the Isoelectronic Technique
We report the first isoelectronic differential force measurements between an Au-coated probe and two Au-coated films, made out of Au and Ge. These measurements, performed at submicron separations…
Experimental investigation of the Casimir force beyond the proximity-force approximation.
An experimental search for corrections to the proximity-force approximation (PFA) is conducted by measuring the Casimir force and force gradient between a gold-coated plate and five gold- coated spheres with different radii using a microelectromechanical torsion oscillator.
Precise comparison of theory and new experiment for the Casimir force leads to stronger constraints on thermal quantum effects and long-range interactions
Strong Casimir force reduction through metallic surface nanostructuring
It is experimentally demonstrated that by nanostructuring one of the interacting metal surfaces at scales below the plasma wavelength, an unexpected regime in the Casimir force can be observed.
Isoelectronic determination of the thermal Casimir force
Differential force measurements between spheres coated with either nickel or gold and rotating disks with periodic distributions of nickel and gold are reported. The rotating samples are covered by a…