Giant axial electrostrictive deformation in carbon nanotubes.
An exceptionally large axial electrostrictive deformation is demonstrated in single walled carbon nanotubes using Hartree-Fock and density functional quantum mechanics simulations. Armchair and zigzag open-ended tubes and capped tubes are studied and in all of them the external electric field induced axial strains can be greater than 10% for a field strength within 1 V/A. The corresponding volumetric and gravimetric work capacities are predicted to be three and six orders higher than those of the best known ferroelectric, electrostrictive, magnetostrictive materials and elastomers, respectively.
Guo
Wanlin
W
Institute of Nano Science, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China. wlguo@nuaa.edu.cn
Guo
Yufeng
Y