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 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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https://hal-ens-lyon.archives-ouvertes.fr/ensl-01399263
Contributeur : Ludovic Bellon <>
Soumis le : jeudi 9 mars 2017 - 23:04:55
Dernière modification le : mardi 16 janvier 2018 - 16:25:35
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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, American Institute of Physics, 2017, 121, pp.094305 〈http://aip.scitation.org/doi/full/10.1063/1.4977867〉. 〈10.1063/1.4977867〉. 〈ensl-01399263v2〉

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