Molecular dynamic study for nanopatterning using atomic force microscopy |
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Authors: | Young-Suk Kim Chan-Il Kim Jun-Young Park Kyung-Hoan Na |
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Affiliation: | (1) the Department of Mechanical Engineering, Kyungpook National University, 702-701 Daegu, Korea;(2) Korea Institute of Industrial Technology, 330-825 Chonan-City, Korea |
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Abstract: | The atomic force microscopy (AFM)-based nanolithographic technique is currently used to directly machine material surfaces
and fabricate nanocomponents for microelectromechanical systems (MEMS) devices. In the current study, three-dimensional molecular
dynamic (MD) simulations with potentials based on the Morse function were performed to evaluate the effect of crystallographic
factors and process variables on the nanodeformation characteristics of the nanolithography processing of monocrystalline
copper. Moreover, the effects of process variables (tool shape, cutting speed, and ploughing depth) on the nanostructural
pattern are investigated. The simulation results revealed that the crystal orientation and ploughing direction had a significant
influence on varying the forces (cutting force, thrust force, and width-direction force); the nature of the nanodeformation
ahead of the tool; and the surface quality of the machined material. |
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