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

Dynamic Behavior of Rotation Transmission Nano-System in Helium Environment: A Molecular Dynamics Study

“…This relative movement also causes friction between the tubes. When the driving force and friction force reach a circumferential equilibrium, the rotor obtains a stable rotation frequency [43]. However, when the RTS works in a helium-filled zone, not only will there be friction between the motor and the rotor, but also the disordered movement of helium atoms will generate skin friction drag, which will affect the rotor's motion behavior.…”

“…Alternatively, Cai et al [37,38] proposed a rotation transmission nano-system RTS consisting of an independent single-walled carbon nanotube (SWCNT) as a nanomotor and a group of coaxially arranged MWCNTs as nanobearing, in which the transmission of the rotation signal between the nanomotor and the nanobearing mainly depends on the interaction between adjacent ends. In addition, some researchers integrated nanomotor and nanobearing into another RTS model using a group of concentric MWCNTs [39][40][41][42][43]. Taking the advantage of the unique properties of boron nitride nanotube (BNNT) [44][45][46][47][48] and the excellent thermal and mechanical properties [49][50][51] of the heterogeneous CNT@BNNT, Zheng et al [43] presented a novel RTS model of heterogeneous triple-walled nanotubes (TWNTs) based on CNTs and BNNT.…”

“…In addition, some researchers integrated nanomotor and nanobearing into another RTS model using a group of concentric MWCNTs [39][40][41][42][43]. Taking the advantage of the unique properties of boron nitride nanotube (BNNT) [44][45][46][47][48] and the excellent thermal and mechanical properties [49][50][51] of the heterogeneous CNT@BNNT, Zheng et al [43] presented a novel RTS model of heterogeneous triple-walled nanotubes (TWNTs) based on CNTs and BNNT. The proposed RTS model was easier to control and the output signal was tunable in a wider temperature range, and the higher the system temperature, the higher the rotation transmission efficiency.…”

“…The purpose of this work is to explore the transmission behavior of the RTS proposed by Zheng et al [43] in a helium environment. When the RTS works in a helium environment, randomly moving helium atoms will attract or repel the atoms on the nanotubes, thereby generating fluid friction and affecting the transmission performance of the RTS.…”

“…When the RTS works in a helium environment, randomly moving helium atoms will attract or repel the atoms on the nanotubes, thereby generating fluid friction and affecting the transmission performance of the RTS. Clearly, it can be concluded from aforementioned studies [43,53,54] that the temperature and gas densities have a significant influence on the nano-system in a medium environment. Therefore, using the classical MD method, the influences of the system temperatures, helium densities and simulation box sizes on the transmission behavior of RTS in a helium environment are especially investigated, aiming at providing guidance for the potential applications of RTS in nanodevices.…”