In-situ visualization of a super-accelerated synthesis of zinc oxide nanostructures through CO2 laser heating

Chia Yao Lo*, Jih Shang Hwang, Xiu Mi Liu, Yung Yi Zhang, Der Chang Chen, Chih Chiang Wu, Tai Yuan Lin, Surojit Chattopadhyay

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A simple growth technique capable of growing a variety of zinc oxide (ZnO) nanostructures with record growth rates of 25 μm/s is demonstrated. Visible lengths of ZnO nanowires, nanotubes, comb-like and pencil-like nanostructures could be grown by employing a focused CO2 laser-assisted heating of a sintered ZnO rod in ambient air, in few seconds. For the first time, the growth process of nanowires was videographed, in-situ, on an optical microscope. It showed that ZnO was evaporated and presumably decomposed into Zn and oxygen by laser heating, reforming ZnO nanostructures at places with suitable growth temperatures. Analysis on the representative nanowires shows a rectangular cross-section, with a [0 0 0 1] growth direction. With CO2 laser heating replacing furnace heating used conventionally, and using different reactants and forming gases, this method could be easily adopted for other semiconducting inorganic nanostructures in addition to ZnO.

Original languageEnglish
Pages (from-to)3564-3568
Number of pages5
JournalJournal of Crystal Growth
Volume312
Issue number24
DOIs
StatePublished - 1 Dec 2010

Keywords

  • A1. Nanostructures
  • A1. Recrystallization
  • B1. Zinc compounds
  • B2. ZnO

Fingerprint

Dive into the research topics of 'In-situ visualization of a super-accelerated synthesis of zinc oxide nanostructures through CO2 laser heating'. Together they form a unique fingerprint.

Cite this