Energy dissipation in gigahertz oscillators from multiwalled carbon nanotubes.
Using atomistic models and molecular dynamics simulations, interlayer corrugation and resistant force in a biwalled carbon nanotube are shown to be strongly dependent upon the morphology combination of the bitube. Consequently, energy dissipation in a commensurate (e.g., armchair/armchair or zigzag/zigzag) bitube oscillator is found to be much larger than that in an incommensurate (e.g., zigzag/armchair) oscillator, resulting in a decay of oscillation amplitude within a few nanoseconds in the commensurate bitube and several tens of nanoseconds in the incommensurate bitube.
Guo
Wanlin
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Institute of Nano Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China. wlguo@nuaa.edu.cn
Guo
Yufeng
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Gao
Huajian
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Zheng
Quanshui
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Zhong
Wenyu
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