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A 3D finite-element numerical simulation was developed to investigate Casimir forces in arbitrary geometries. The code was verified comparing it with results obtained from analytical equations. Appling the simulation to previously not…

Quantum Physics · Physics 2009-11-10 M. Tajmar

A novel approach for calculating Casimir forces between periodically deformed objects is developed. This approach allows, for the first time, a rigorous non-perturbative treatment of the Casimir effect for disconnected objects beyond…

Statistical Mechanics · Physics 2010-12-17 Thorsten Emig

The Casimir force acting between two test bodies made of different metals is considered. The finiteness of the conductivity of the metals is taken into account perturbatively up to the fourth order of the relative penetration depths of…

Quantum Physics · Physics 2007-05-23 B. Geyer , G. L. Klimchitskaya , V. M. Mostepanenko

Frequency-modulation atomic force microscopy provides an outstanding precision of the measurement of chemical bonding forces. However, as the cantilever oscillates with an amplitude A that is usually on the order of atomic dimensions or…

Materials Science · Physics 2021-08-13 Ferdinand Huber , Franz J. Giessibl

We show that the Casimir effect should be influenced by variations of the gravitational potential. This could be tested with a satellite in a highly elliptic orbit. Still significant technology development is required to achieve a relative…

General Physics · Physics 2015-08-25 C. J. de Matos , M. Tajmar

Kelvin probe force microscopy at normal pressure was performed by two different groups on the same Au-coated planar sample used to measure the Casimir interaction in a sphere-plane geometry. The obtained voltage distribution was used to…

Mesoscale and Nanoscale Physics · Physics 2015-06-22 R. O. Behunin , D. A. R. Dalvit , R. S. Decca , C. Genet , I. W. Jung , A. Lambrecht , A. Liscio , D. Lopez , S. Reynaud , G. Schnoering , G. Voisin , Y. Zeng

We present the scattering approach which is nowadays the best tool for describing the Casimir force in realistic experimental configurations. After reminders on the simple geometries of 1d space and specular scatterers in 3d space, we…

Quantum Physics · Physics 2015-05-18 S. Reynaud , A. Canaguier-Durand , R. Messina , A. Lambrecht , P. A. Maia Neto

We discuss the calculation of Casimir forces between a collection of $N$-dielectric spheres. This is done by evaluating directly the force on a sphere constructed from a stress tensor, rather than an interaction energy. Two and three body…

Quantum Physics · Physics 2015-05-14 James Babington

We calculate the Casimir force between two parallel plates if the boundary conditions for the photons are modified due to presence of the Chern-Simons term. We show that this effect should be measurable within the present experimental…

High Energy Physics - Theory · Physics 2008-11-26 M. Bordag , D. V. Vassilevich

Near-field force and energy exchange between two objects due to quantum electrodynamic fluctuations give rise to interesting phenomena such as Casimir and van der Waals forces, and thermal radiative transfer exceeding Planck's theory of…

Mesoscale and Nanoscale Physics · Physics 2009-09-07 Arvind Narayanaswamy , Sheng Shen , Gang Chen

We demonstrate a method to accurately control the distance between a custom probe and a sample on a {\mu}m to nm scale. The method relies on the closed-loop feedback on the angular deflection of an in-contact AFM microcantilever. High…

Instrumentation and Detectors · Physics 2015-06-24 Robert Molenaar , Jord C. Prangsma , Kees O. van der Werf , Martin L. Bennink , Christian Blum , Vinod Subramaniam

The search for non-Newtonian forces has been pursued following many different paths. Recently it was suggested that hypothetical chameleon interactions, which might explain the mechanisms behind dark energy, could be detected in a…

Instrumentation and Detectors · Physics 2015-05-08 Attaallah Almasi , Philippe Brax , Davide Iannuzzi , René I. P. Sedmik

Recent progresses on quantum control of cold atoms and trapped ions in both the scientific and technological aspects greatly advance the applications in precision measurement. Thanks to the exceptional controllability and versatility of…

Atomic Physics · Physics 2020-09-07 Qiuxin Zhang , Yirong Wang , Chenhao Zhu , Yuxin Wang , Xiang Zhang , Kuiyi Gao , Wei Zhang

Ambient operation poses a challenge to AFM because in contrast to operation in vacuum or liquid environments, the cantilever dynamics change dramatically from oscillating in air to oscillating in a hydration layer when probing the sample.…

Mesoscale and Nanoscale Physics · Physics 2014-02-24 Daniel S. Wastl , Alfred J. Weymouth , Franz J. Giessibl

Quantum fluctuations give rise to van der Waals and Casimir forces that dominate the interaction between electrically neutral objects at sub-micron separations. Under the trend of miniaturization, such quantum electrodynamical effects are…

Mesoscale and Nanoscale Physics · Physics 2013-05-20 J. Zou , Z. Marcet , A. W. Rodriguez , M. T. H. Reid , A. P. McCauley , I. I. Kravchenko , T. Lu , Y. Bao , S. G. Johnson , H. B. Chan

We briefly review recent experiments in atomic, molecular, and optical physics using precision measurements to search for physics beyond the Standard Model. We consider three main categories of experiments: searches for changes in…

Atomic Physics · Physics 2015-06-11 Chad Orzel

In a recent paper (Phys.Rev.A78, 020101(R) (2008)), Kim at al. have reported a large anomaly in the scaling law of the electrostatic interaction between a sphere and a plate, which was observed during the calibration of their Casimir force…

Quantum Physics · Physics 2009-11-13 S. de Man , K. Heeck , D. Iannuzzi

The quantitative measurement of viscoelasticity of nano-scaleentities is an important goal of nanotechnology research and there is considerable progress with advent of dynamic Atomic Force Microscopy. The hydrodynamics of cantilever, the…

Soft Condensed Matter · Physics 2021-06-28 Shatruhan Singh Rajput , Surya Pratap S Deopa , V. J. Ajith , Sukrut C. Kamerkar , Shivprasad Patil

We find the joint effect of non-zero temperature and finite conductivity onto the Casimir force between real metals. Configurations of two parallel plates and a sphere (lens) above a plate are considered. Perturbation theory in two…

Quantum Physics · Physics 2009-11-06 M. Bordag , B. Geyer , G. L. Klimchitskaya , V. M. Mostepanenko

We address three different problematic Casimir experiments in this work. The first is the classical Casimir force measured between two metal half spaces; here in the form of the Casimir pressure measurement between a gold sphere and a gold…

Quantum Physics · Physics 2009-10-27 Bo E. Sernelius