Recoverability of a gigahertz rotation-translation nanoconvertor with hydrogenated deformable rotor at room temperature

B Song and J Shi and CW Hu and JB Wang and K Cai and C Zhang, NANOTECHNOLOGY, 30, 465301 (2019).

DOI: 10.1088/1361-6528/ab3b7c

To design a rotor with recoverable deformation for conversion between rotation and translation in a nanodevice, an internally hydrogenated deformable part (HDP) was introduced in the carbon nanotube-based rotor. Initially, under van der Waals (vdW) force, the hydrogenated areas on the HDP curved toward the rotating axis. When a rotational frequency was exerted on the rotor, the hydrogenated parts on the HDP were separated under strong centrifugal force. Translational motion of the free edge of the rotor was generated synchronously during deformation of the HDP. Once removing the input rotation, the rotor would stop rotating by friction from the stators, and the HDP shrank back by strong vdW force but weakening centrifugal force. Hence, the nanoconvertor has recoverability, which was verified by molecular dynamics simulations with considering the effects of hydrogenation schemes and input rotational frequency at room temperature. Conclusions were drawn for a design of a nanodevice based on the present rotation-translation nanoconvertor model.

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