Torsional strain effects on intertube friction in carbon nanotube: strain engineering in friction
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The possibility of strain engineering of friction in carbon nanotube is explored in this paper. The intertube friction in double-walled carbon nanotube under torsional strain is calculated by employing the molecular dynamics simulations. By studying the intertube friction in double-walled carbon nanotube subjected to torsional strain, it is found that the friction can be tuned by torsional strain. It shows that the temperature has great influence on torsional strain effects on intertube friction. Mechanism and physical insight of torsional strain effects are revealed by numerical and phonon spectra analysis. It is found that the torsional strain accelerates of the exchange from order kinetic energy to disorder thermal energy. The work in this paper implies the potential of strain engineering in nanoscale friction and brings new insight into fundamental understanding of strain-effect mechanism in nanoscale friction.
KeywordsNanoscale friction Strain engineering Torsional strain effects Carbon nanotube Phonon spectra analysis
The authors wish to acknowledge the support from the National Natural Science Foundation of China (11472108, 11772130, and 11702067), Natural Science Foundation of Guangdong Province (Grant no. 2016A030313617), and the Foundation for Young Talents in Higher Education of Guangdong, China (Grant no. 2015KQNCX122)
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Conflict of interest
The authors declare that they have no conflict of interest.
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