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Giant axial electrostrictive deformation in carbon nanotubes
1Institute of Nano Science, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China. wlguo@nuaa.edu.cn
Abstract:
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.
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