The piezoelectric effect on the carbon and boron nitride coaxial heteronanotubes resonator

Carbon nanotube(CNT)-based nanoresonators exhibit high sensitivity in the mass detection domain, but the difficulty in tuning the resonant characteristics restricts its application. In this paper, we investigate the resonance characteristics and intrinsic dissipation of a CNT and BNNT coaxial heterostructure (CNT@BNNT) via molecular dynamics simulations. Compared with the CNT, the resonance characteristics of CNT@BNNT change with the axial strain variation induced by the electric field. Besides, the intrinsic dissipation of CNT@BNNT, mainly influenced by thermoelastic damping, has a similar variation to resonance characteristics. These interesting features indicate that CNT@BNNT is an excellent resonator with piezoelectrically tunable properties.