Nano Express

Nanoscale Research Letters

, Volume 5, Issue 3, pp 581-586

Open Access This content is freely available online to anyone, anywhere at any time.

In Situ Confocal Raman Mapping Study of a Single Ti-Assisted ZnO Nanowire

  • Ashish C. GandhiAffiliated withDepartment of Physics, National Dong Hwa University
  • , Hsuan-Jung HungAffiliated withDepartment of Physics, National Dong Hwa University
  • , Po-Hsun ShihAffiliated withDepartment of Physics, National Dong Hwa University
  • , Chia-Liang ChengAffiliated withDepartment of Physics, National Dong Hwa University
  • , Yuan-Ron MaAffiliated withDepartment of Physics, National Dong Hwa University
  • , Sheng Yun WuAffiliated withDepartment of Physics, National Dong Hwa University Email author 

Abstract

In this work, we succeeded in preparing in-plane zinc oxide nanowires using a Ti-grid assisted by the chemical vapor deposition method. Optical spatial mapping of the Confocal Raman spectra was used to investigate the phonon and geometric properties of a single ZnO nanowire. The local optical results reveal a red shift in the non-polar E 2 high frequency mode and width broadening along the growth direction, reflecting quantum-confinement in the radial direction.

Keywords

Nanocrystalline materials Confocal Raman Spectroscopy Nanowire