Open Access Nano Express

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

Ashish C Gandhi, Hsuan-Jung Hung, Po-Hsun Shih, Chia-Liang Cheng, Yuan-Ron Ma and ShengYun Wu*

Author affiliations

Department of Physics, National Dong Hwa University, Hualien, 97401, Taiwan

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Citation and License

Nanoscale Research Letters 2009, 5:581-586  doi:10.1007/s11671-009-9509-1

Published: 30 December 2009

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 E2 high frequency mode and width broadening along the growth direction, reflecting quantum-confinement in the radial direction.

Keywords:
Nanocrystalline materials; Confocal Raman Spectroscopy; Nanowire