Electrostriction study for single-walled carbon nanotubes-based composite

Abstract

This paper proposes a 3D finite element method procedure to study the electrostrictive property of the single-walled carbon nanotube (SWCNT)-based composite. The numerical model in nanoscale is developed to investigate the electrostrictive behavior of the SWCNT and the polyvinylidene fluoride and trifluoroethylene P(VDF-TrFE) composite. A bond electrical contact model is adopted to reproduce the coupled electromechanical effects of the interface between SWCNT and P(VDP-TrFE). According to the model proposed, the mechanism of the enhanced electrostriction in SWCNT/P(VDP-TrFE) composite is intuitively demonstrated. Numerical results show that aside from the variation of electric field, the electrostriction of the SWCNT/P(VDP-TrFE) composite is greatly depend on the volume fraction of SWCNT and the difference of dielectric constant between SWCNT and P(VDP-TrFE) copolymer. While the dielectric constant of SWCNT is mainly depend on the chirality of SWCNT, which means that the electrostriction of the SWCNT/P (VDP-TrFE) composite is also largely depend on the chirality of SWCNT.

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“…Tang et al 5 proposed a finite element method procedure to study the electrostrictive property of the carbon nanotube composite. They showed that the electrostriction of the composite was greatly depend on their alignment in the matrix.…”