Reversing rotation of a nanomotor by introducing a braking BNC nanotube

HL Jin and HY Duan and J Shi, COMPUTATIONAL MATERIALS SCIENCE, 159, 327-332 (2019).

DOI: 10.1016/j.commatsci.2018.12.031

To adjust the rotation of a CNT-based nanomotor, a boron-nitride carbon nanotube is adopted as a braking tube. The dynamic response of the rotor in the motor is tested using molecular dynamics simulations. It is discovered that not only the rotational speed of the rotor can be reduce by improving insert depth of the braking tube into the rotor, but also the rotational direction of the rotor can be reversed. Once the reverse rotation is obtained, it is independent on the insert depth, but very sensitive to the environmental temperature. The properties will benefit design of a rotary nanodevice with controllable rotation as output signal.

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