On the Sensitivity of Nanogripper-Carbon Nanotube Friction to Contact Area

Despite the large volume of research dedicated to the structure and functioning of nano- electromechanical systems, few researchers have addressed the practical problems involved in their manufacture and manipulation. This paper investigates the friction phenomenon in Carbon Nanotubes (CNTs) being g...

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Bibliographic Details
Published in:E-journal of surface science and nanotechnology 2017/08/05, Vol.15, pp.81-86
Main Authors: Haddadi, Elnaz, Kashani, Hadi Ghattan, panahi, Masoud Shariat, Nahvi, Hasan
Format: Article
Language:English
Subjects:
Carbon Nanotubes
Computer simulation
Contact area
Friction
Mechanical properties
Molecular adhesion
Molecular Dynamics
Nanogrippers
Nanoparticles
Pneumatics
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Summary:Despite the large volume of research dedicated to the structure and functioning of nano- electromechanical systems, few researchers have addressed the practical problems involved in their manufacture and manipulation. This paper investigates the friction phenomenon in Carbon Nanotubes (CNTs) being grasped/manipulated by a nanogripper. Molecular Dynamics (MD) simulations are employed to model the combination of friction and molecular adhesion that governs the mechanical behavior of a CNT when subjected to various loads from the gripper. It is shown that for a certain gripping force, friction between the CNT and the gripper is nonlinearly proportional to the contact area up to a certain value, and remains unchanged afterwards. This is contrary to the common belief that any amount of friction force required for detaching/relocating of CNTs could be achieved by increasing the gripping force. The implications of this finding could affect the way nanogrippers are designed for the construction/manipulation of nanoparticles. [DOI: 10.1380/ejssnt.2017.81]
ISSN:1348-0391
1348-0391
DOI:10.1380/ejssnt.2017.81