Strain effects on rotational property in nanoscale rotation system

Jianzhang Huang,Qiang Han

doi:10.1038/s41598-017-18903-9

Abstract

This paper presents a study of strain effects on nanoscale rotation system consists of double-walls carbon nanotube and graphene. It is found that the strain effects can be a real-time controlling method for nano actuator system. The strain effects on rotational property as well as the effect mechanism is studied systematically through molecular dynamics simulations, and it obtains valuable conclusions for engineering application of rotational property management of nanoscale rotation system. It founds that the strain effects tune the rotational property by influencing the intertube supporting effect and friction effect of double-walls carbon nanotube, which are two critical factors of rotational performance. The mechanism of strain effects on rotational property is investigated in theoretical level based on analytical model established through lattice dynamics theory. This work suggests great potentials of strain effects for nanoscale real-time control, and provides new ideas for design and application of real-time controllable nanoscale rotation system.

Highlights

Nanoelectromechanical system (NEMS) has pushed the revolution in modern industry of sensor, mechanical engineering and energy conversion system in last decade, because of the new physical properties and functions brought from its nanoscale feature sizes[1,2,3,4]
Strains change the relative position of atoms in carbon nanotube, that can alter the force constants based on lattice dynamic theory
The strain effects on the rotational property of nanoscale rotation system, which can be utilized as the real-time control method in nanoscale, are systematically investigated by molecular dynamics simulations and analytical model built on lattice dynamics theory

Summary

OPEN Strain effects on rotational property in nanoscale rotation system

This paper presents a study of strain effects on nanoscale rotation system consists of double-walls carbon nanotube and graphene. The strain effects on rotational property as well as the effect mechanism is studied systematically through molecular dynamics simulations, and it obtains valuable conclusions for engineering application of rotational property management of nanoscale rotation system It founds that the strain effects tune the rotational property by influencing the intertube supporting effect and friction effect of double-walls carbon nanotube, which are two critical factors of rotational performance. In this paper, based on the nanoscale rotation systems proposed by Huang et al.[17], molecular dynamics (MD) simulations are performed to systematically investigate the strain effects on of rotational property and effect mechanism It shows that the real-time management of rotational property is successfully realized by strain effects. Analytical model is constructed to obtain further physical insight of strain effects on rotational property

Simulations model and methods

Results and Discussions

Conclusion

Additional Information