Fabrication and Characterization of Nanoscale Ferroelectric Honeycombs

摘要

Nanoscale ferroelectric honeycombs, comprised of vertically aligned PbTiO_3 nanotubes, are fabricated by vapor phase reaction between lead acetate-infiltrated TiO_2 nanotubes and PbO vapor. PbTiO_3 nanohoneycombs converted by vapor phase reaction at 550℃ showed well-aligned nanoscale structure with alignment angle less than 1° and well-defined ferroelectric properties with the effective piezoelectric coefficient of 44 pm/V. This novel nanoscale structure is expected to facilitate high efficiency sensing of electromechanical and electrochemical stimuli.