標題: Direct observation of melting behaviors at the nanoscale under electron beam and heat to form hollow nanostructures
作者: Huang, Chun-Wei
Hsin, Cheng-Lun
Wang, Chun-Wen
Chu, Fu-Hsuan
Kao, Chen-Yen
Chen, Jui-Yuan
Huang, Yu-Ting
Lu, Kuo-Chang
Wu, Wen-Wei
Chen, Lih-Juann
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 2012
摘要: "We report the melting behaviours of ZnO nanowire by heating ZnO-Al2O3 core-shell heterostructures to form Al2O3 nanotubes in an in situ ultrahigh vacuum transmission electron microscope (UHV-TEM). When the ZnO-Al2O3 core-shell nanowire heterostructures were annealed at 600 degrees C under electron irradiation, the amorphous Al2O3 shell became single crystalline and then the ZnO core melted. The average vanishing rate of the ZnO core was measured to be 4.2 nm s(-1). The thickness of the Al2O3 nanotubes can be precisely controlled by the deposition process. Additionally, the inner geometry of nanotubes can be defined by the initial ZnO core. The result shows a promising method to obtain the biocompatible Al2O3 nanotubes, which may be applied in drug delivery, biochemistry and resistive switching random access memory (ReRAM)."
URI: http://hdl.handle.net/11536/16682
ISSN: 2040-3364
期刊: NANOSCALE
Volume: 4
Issue: 15
結束頁: 4702
顯示於類別:期刊論文


文件中的檔案:

  1. 000306324000051.pdf