School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510640, China.
Sci Rep. 2018 Jan 11;8(1):432. doi: 10.1038/s41598-017-18903-9.
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.
本文研究了应变对由双层碳纳米管和石墨烯组成的纳米旋转系统的影响。研究发现，应变可以成为纳米执行器系统的实时控制方法。通过分子动力学模拟系统地研究了应变对旋转特性的影响及其作用机制，为纳米旋转系统旋转特性的工程应用提供了有价值的结论。研究发现，应变通过影响双层碳纳米管的管间支撑作用和摩擦作用来调节旋转特性，这是旋转性能的两个关键因素。基于晶格动力学理论建立的分析模型，从理论层面研究了应变对旋转特性的影响机制。这项工作为纳米级实时控制中的应变效应提供了巨大的潜力，并为实时可控纳米旋转系统的设计和应用提供了新的思路。
