Constraining New Forces in the Casimir Regime Using the Isoelectronic Technique

By Ricardo S. Decca, Daniel López, H. B. Chan, Ephraim Fischbach, Dennis E. Krause, C. Jamell. 2005

158 citations recorded by the source corpus.

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 using soft microelectromechanical torsional oscillators, eliminate the need for a detailed understanding of the probe-film Casimir interaction. The observed differential signal is directly converted into limits on the parameters {alpha} and {lambda} which characterize Yukawa-like deviations from Newtonian gravity. We find {alpha} < or approx. 10{sup 12} for {lambda}{approx}200 nm, an improvement of {approx}10 over previous limits.

Subfields: Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/15e27345c3cd52f5a7a63e0b4b9790adfeceff87

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In Atomic and Molecular Physics, and Optics

In Statistical and Nonlinear Physics

Citations in the corpus

A review of short-range gravity experiments in the LHC era (2014, methodology): “Decca et. al. at Indiana-Purdue University tested (Figure 27) with α < 1013 at λ = 100 nm (Decca et al. 2005, Decca et al. 2007).”
Search for New Physics with Atoms and Molecules (2017, methodology): “(2016b) employing a micromechanical torsional oscillator have recently probed the 4 × 10−8 m ∼ λ ∼ 10−5 m range by coating the surface of an alternating density source mass with gold in order to keep the Casimir effect uniform as the position of the source mass is varied (Decca et al., 2005; Matloob”
The Casimir force between real materials: Experiment and theory (2009, methodology): “The most precise measurements of the Casimir force between metallic surfaces were performed in a series of experiments by Decca et al. (2003a, 2003b, 2004, 2005b, 2007a, 2007b) using a micromechanical torsional oscillator.”