%0 Journal Article
%T Strong geometry dependence of the Casimir force between interpenetrated rectangular gratings
%+ The Hong Kong University of Science and Technology
%+ Laboratoire Charles Fabry / Nanophotonique
%+ Laboratoire Charles Coulomb (L2C)
%+ Théorie du rayonnement matière et phénomènes quantiques
%+ East China Normal University [Shangaï] (ECNU)
%A Wang, Mingkang
%A Tang, Lu
%A Messina, C. Y. Ng Riccardo
%A Guizal, Brahim
%A Crosse, J. A.
%A Antezza, Mauro
%A Chan, Che Ting
%A Chan, Ho Bun
%< avec comité de lecture
%Z L2C:21-005
%@ 2041-1723
%J Nature Communications
%I Nature Publishing Group
%V 12
%P 600
%8 2021-01-26
%D 2021
%R 10.1038/s41467-021-20891-4
%Z Physics [physics]/Quantum Physics [quant-ph]
%Z Physics [physics]/Condensed Matter [cond-mat]/Quantum Gases [cond-mat.quant-gas]
%Z Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus]
%Z Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph]
%Z Physics [physics]/Physics [physics]/Optics [physics.optics]Journal articles
%X Quantum fluctuations give rise to Casimir forces between two parallel conducting plates, the magnitude of which increases monotonically as the separation decreases. By introducing nanoscale gratings to the surfaces, recent advances have opened opportunities for controlling the Casimir force in complex geometries. Here, we measure the Casimir force between two rectangular silicon gratings. Using an on-chip detection platform, we achieve accurate alignment between the two gratings so that they interpenetrate as the separation is reduced. Just before interpenetration occurs, the measured Casimir force is found to have a geometry dependence that is much stronger than previous experiments, with deviations from the proximity force approximation reaching a factor of ~500. After the gratings interpenetrate each other, the Casimir force becomes non-zero and independent of displacement. This work shows that the presence of gratings can strongly modify the Casimir force to control the interaction between nanomechanical components.
%G English
%2 https://hal.science/hal-03122200/document
%2 https://hal.science/hal-03122200/file/s41467-021-20891-4.pdf
%L hal-03122200
%U https://hal.science/hal-03122200
%~ IOGS
%~ CNRS
%~ PARISTECH
%~ LCFIO
%~ LCF_NAPHEL
%~ L2C
%~ UNIV-PARIS-SACLAY
%~ MIPS
%~ UNIV-MONTPELLIER
%~ TEST-HALCNRS
%~ UNIVERSITE-PARIS-SACLAY
%~ GS-ENGINEERING
%~ GS-PHYSIQUE
%~ INSTITUT-SCIENCES-LUMIERE
%~ UM-2015-2021