Effective piezoelectric response of substrate-integrated ZnO nanowire array devices on galvanized steel. Academic Article uri icon


  • Harvesting waste energy through electromechanical coupling in practical devices requires combining device design with the development of synthetic strategies for large-area controlled fabrication of active piezoelectric materials. Here, we show a facile route to the large-area fabrication of ZnO nanostructured arrays using commodity galvanized steel as the Zn precursor as well as the substrate. The ZnO nanowires are further integrated within a device construct and the effective piezoelectric response is deduced based on a novel experimental approach involving induction of stress in the nanowires through pressure wave propagation along with phase-selective lock-in detection of the induced current. The robust methodology for measurement of the effective piezoelectric coefficient developed here allows for interrogation of piezoelectric functionality for the entire substrate under bending-type deformation of the ZnO nanowires.

published proceedings

  • ACS Appl Mater Interfaces

altmetric score

  • 3

author list (cited authors)

  • Velazquez, B., Baskaran, S., Gaikwad, A. V., Ngo-Duc, T., He, X., Oye, M. M., ... Banerjee, S.

citation count

  • 26

complete list of authors

  • Velazquez, By Jesus M||Baskaran, Sivapalan||Gaikwad, Anil V||Ngo-Duc, Tam-Triet||He, Xiangtong||Oye, Michael M||Meyyappan, M||Rout, Tapan K||Fu, John Y||Banerjee, Sarbajit

publication date

  • November 2013