Fabrication of ZnO nanowires arrays by anodization and high-vacuum die casting technique, and their piezoelectric properties

Chin Guo Kuo, Ho Chang, Jian Hao Wang

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

In this investigation, anodic aluminum oxide (AAO) with arrayed and regularly arranged nanopores is used as a template in the high-vacuum die casting of molten zinc metal (Zn) into the nanopores. The proposed technique yields arrayed Zn nanowires with an aspect ratio of over 600. After annealing, arrayed zinc oxide (ZnO) nanowires are obtained. Varying the anodizing time yields AAO templates with thicknesses of approximately 50 _m, 60 _m, and 70 _m that can be used in the fabrication of nanowires of three lengths with high aspect ratios. Experimental results reveal that a longer nanowire generates a greater measured piezoelectric current. The ZnO nanowires that are fabricated using an alumina template are anodized for 7 h and produce higher piezoelectric current of up to 69 pA.

Original languageEnglish
Article number431
Pages (from-to)1-10
Number of pages10
JournalSensors (Switzerland)
Volume16
Issue number4
DOIs
Publication statusPublished - 2016 Mar 24

Keywords

  • Anodic aluminum oxide (AAO)
  • Vacuum die casting
  • ZnO nanowires

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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