A map between excitation magnitude and critical stable temperature for screwing oscillators built on double-walled nanotubes

YW Lin and WG Jiang and QH Qin and SM Liao, PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 118, 113943 (2020).

DOI: 10.1016/j.physe.2019.113943

The influence of excitation amplitude and temperature on oscillation behavior of a novel oscillator is investigated via the classic molecular dynamics (MD) method. The oscillator is built on carbon@MoS2 heterogeneous nanotubes (CNT@MST) and has dual-signal screwing output. A map between the excitation magnitude and the critical stable temperature is generated to show the maximum service temperature at which the inner tube can perform a stable screwing oscillation under different pull- rotation excitations. The results indicate that, under the same pull- rotation excitation, the CNT@MST screwing oscillators exhibit lower energy dissipation, higher axial oscillation frequency and higher stable temperature than those from the traditional CNT@CNT screwing oscillators with the same inner tube.

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