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Journal Articles Journal of Applied Physics Year : 2017

Dynamic stiffness of the contact between a carbon nanotube and a flat substrate in a peeling geometry

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Abstract

We study the physics of adhesion and the contact mechanics at the nanoscale with a peeling experiment of a carbon nanotube on a flat substrate. Using an interferometric atomic force microscope and an extended force modulation protocol, we investigate the frequency response of the stiffness of the nano-contact from DC to 20 kHz. We show that this dynamic stiffness is only weakly frequency dependent, increasing by a factor 2 when the frequency grows by 3 orders of magnitude. Such behavior may be the signature of amorphous relaxations during the mechanical solicitation at the nano-scale.
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Dates and versions

ensl-01399263 , version 1 (21-11-2016)
ensl-01399263 , version 2 (09-03-2017)

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Tianjun Li, Lorène Champougny, Ludovic Bellon. Dynamic stiffness of the contact between a carbon nanotube and a flat substrate in a peeling geometry. Journal of Applied Physics, 2017, 121, pp.094305 ⟨10.1063/1.4977867⟩. ⟨ensl-01399263v2⟩
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