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

Abstract : We study the physics of adhesion and the mechanics of the contact 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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https://hal-ens-lyon.archives-ouvertes.fr/ensl-01399263
Contributor : Ludovic Bellon <>
Submitted on : Monday, November 21, 2016 - 10:08:29 AM
Last modification on : Thursday, April 19, 2018 - 2:54:04 PM
Document(s) archivé(s) le : Monday, March 20, 2017 - 8:14:26 PM

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  • HAL Id : ensl-01399263, version 1
  • ARXIV : 1611.06837

Citation

Tianjun Li, Lorène Champougny, Ludovic Bellon. Dynamic stiffness of the contact between a carbon nanotube and a flat substrate in a peeling geometry. 2016. ⟨ensl-01399263v1⟩

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