Shi Jiao, Wu Puwei, Li Xin, Cai Kun, Zhang Yingyan
College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, People's Republic of China.
School of Engineering, RMIT University, Bundoora, VIC 3083, Australia.
Nanotechnology. 2021 Mar 23;32(24). doi: 10.1088/1361-6528/abecb7.
Carbon nanotubes (CNTs) have been widely used as the motor and rotor in a rotational transmission nanosystem (RTnS), whose function is to transfer the input rotational frequency of the motor into the output frequency of the rotor through motor-rotor interactions. A wide range of techniques has been explored to achieve a CNT-based RTnS with a stable and adjustable transmission. In this work, a CNT-based rotor is partly immersed into a water box and the associated water-rotor interaction leads to effective manipulation of the transmission efficiency of RTnS. Molecular dynamics simulations are performed on this new RTnS to investigate the dynamic response of the rotor and the local flow field near the water-rotor interface. Various parameters, including ambient temperature, tubes' radii, and volume fractions of water in the box () are examined for their effects on the rotational transmission efficiency. This study offers useful guidelines for the design of stable RTnS with controllable transmission efficiency.
碳纳米管（CNTs）已被广泛用作旋转传输纳米系统（RTnS）中的电机和转子，该系统的功能是通过电机与转子的相互作用将电机的输入旋转频率转换为转子的输出频率。人们已经探索了多种技术来实现基于碳纳米管的具有稳定且可调传输性能的RTnS。在这项工作中，一个基于碳纳米管的转子部分浸入一个水箱中，相关的水 - 转子相互作用导致对RTnS传输效率的有效控制。对这种新型RTnS进行了分子动力学模拟，以研究转子的动态响应以及水 - 转子界面附近的局部流场。研究了各种参数，包括环境温度、碳纳米管半径以及水箱中水的体积分数（）对旋转传输效率的影响。这项研究为设计具有可控传输效率的稳定RTnS提供了有用的指导。
