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arXiv · 1611.06837

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

Tianjun Li·Lorène Champougny·Ludovic Bellon
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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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Tianjun Li, Lorène Champougny, Ludovic Bellon. 2017-03-10. Dynamic stiffness of the contact between a carbon nanotube and a flat substrate in a peeling geometry. https://doi.org/10.1063/1.4977867

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