Measurement of the Casimir force between a spherical gold tip and Si(111)-(7 x 7) surfaces

Yoshida, Naoki; Higashino, Kazuhiko; Sueoka, Kazuhisa

doi:10.7567/JJAP.55.08NB20


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Measurement of the Casimir force between a spherical gold tip and Si(111)-(7 x 7) surfaces

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Title:	Measurement of the Casimir force between a spherical gold tip and Si(111)-(7 x 7) surfaces
Authors:	Yoshida, Naoki Browse this author
	Higashino, Kazuhiko Browse this author
	Sueoka, Kazuhisa Browse this author →KAKEN DB
Issue Date:	Aug-2016
Publisher:	IOP Publishing
Journal Title:	Japanese Journal of Applied Physics (JJAP)
Volume:	55
Issue:	8
Start Page:	08NB20-1
End Page:	08NB20-5
Publisher DOI:	10.7567/JJAP.55.08NB20
Abstract:	We have performed the measurement of Casimir force between a spherical Au tip and an atomically flat Si(111)-(7 x 7) surface at tip-sample distances ranging from 15 to 50nm in an ultrahigh vacuum of 1.5 x 10(-8)Pa by frequency-modulation atomic force microscopy. Atomically flat Si(111) surfaces provided by the ultrahigh-vacuum condition and a degassed Au tip reduce the contact potential difference that must be compensated. These experimental conditions led to the elucidation of the distance dependence of the Casimir force down to the distance of 15 nm. The observed distance dependence still follows a theory provided by Chen et al. [Phys. Rev. A 74, 022103 (2006)] within these distances. (C) 2016 The Japan Society of Applied Physics
Rights:	© 2016 The Japan Society of Applied Physics
Type:	article (author version)
URI:	http://hdl.handle.net/2115/66617
Appears in Collections:	情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 吉田尚樹

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