Preserving the Q-factors of ZnO nanoresonators via polar surface reconstruction

Jin Wu Jiang, Harold S. Park, Timon Rabczuk

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We perform molecular dynamics simulations to investigate the effect of polar surfaces on the quality (Q)-factors of zinc oxide (ZnO) nanowire-based nanoresonators. We find that the Q-factors in ZnO nanoresonators with free polar (0001) surfaces are about one order of magnitude higher than in nanoresonators that have been stabilized with reduced charges on the polar (0001) surfaces. From normal mode analysis, we show that the higher Q-factor is due to a shell-like reconstruction that occurs for the free polar surfaces. This shell-like reconstruction suppresses twisting motion in the nanowires such that the mixing of other modes with the resonant mode of oscillation is minimized, and leads to substantially higher Q-factors in ZnO nanoresonators with free polar surfaces.

Original languageEnglish
Article number405705
JournalNanotechnology
Volume24
Issue number40
DOIs
Publication statusPublished - 2013 Oct 11

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Preserving the Q-factors of ZnO nanoresonators via polar surface reconstruction'. Together they form a unique fingerprint.

Cite this