A novel rotation transmission nano-system based on Carbon@Boron- Nitride@Carbon heterogeneous nanotubes: A molecular dynamics study

P Zheng and WG Jiang and YW Lin and YJ Chen and QH Qin and DS Li, COMPUTATIONAL MATERIALS SCIENCE, 196, 110517 (2021).

DOI: 10.1016/j.commatsci.2021.110517

A novel rotation transmission nano-system (RTS) model built from heterogeneous triple-walled nanotubes (TWNTs) is proposed to achieve a specific stable speed output and its transmission performance is investigated using the molecular dynamics (MD) method. In the proposed heterogeneous RTS, the inner carbon nanotube (CNT) acts as a rotor, the middle boron nitride tube (BNNT) acts as a motor, and the outer CNT acts as a stator. The transmission between the motor and the rotor is completed by the interlayer van der Waals effects and the end effects. The MD simulation results show that heterogeneous TWNTs RTS could work stably in an environmental temperature range of 100 K to 600 K. Constraint conditions have a significant influence on the transmission performance of the rotors, and when the motor and rotor are both free, the RTS has the best transmission behavior. It can also be found that RTS under different working conditions is accompanied by different temperature differences between the motor and rotor during service. Compared with the traditional RTS consisting of an independent single- walled carbon nanotube (SWCNT) (worked as motor) and a group of coaxially arranged double-walled carbon nanotubes (DWCNTs) (worked as rotor and stator), the proposed RTS is easier to control and the rotors' output signal is tunable in a wider temperature range.

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