Direct observation of melting behaviors at the nanoscale under electron beam and heat to form hollow nanostructures

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Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/107068

Title:	Direct observation of melting behaviors at the nanoscale under electron beam and heat to form hollow nanostructures
Authors:	辛正倫;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
Contributors:	資訊電機學院電機工程學系
Date:	2012-08-07
Issue Date:	2026-04-23 13:55:06 (UTC+8)
Publisher:	Royal Society of Chemistry
Abstract:	摘要： We report the melting behaviours of ZnO nanowire by heating ZnO-Al 2 O 3 core-shell heterostructures to form Al 2 O 3 nanotubes in an in situ ultrahigh vacuum transmission electron microscope (UHV-TEM). When the ZnO-Al 2 O 3 core-shell nanowire heterostructures were annealed at 600 °C under electron irradiation, the amorphous Al 2 O 3 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 Al 2 O 3 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 Al 2 O 3 nanotubes, which may be applied in drug delivery, biochemistry and resistive switching random access memory (ReRAM). The transformation of ZnO-Al 2 O 3 core-shell nanowire heterostructures into single crystal Al 2 O 3 nanotubes under electron irradiation and annealing has been observed in situ using an UHV-TEM. 出版日期： 2012-07-12 識別號： ISSN: 2040-3364 識別號： EISSN: 2040-3372 識別號： DOI: 10.1039/c2nr30724c
Appears in Collections:	[Department of Electrical Engineering] journal & Dissertation

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