Physical mechanism of surface roughening on the radial core-shell nanowire heterostructure with alloy shell

Physical mechanism of surface roughening on the radial core-shell nanowire heterostructure with alloy shell

We proposed a quantitative thermodynamic theory to address the physical process of surface roughening during the epitaxial growth of core-shell NW with alloy layer. The surface roughening origins from the transformation of the Frank-van der Merwe (FM) mode to the Stranski-Krastanow (SK) mode. In add...

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Main Authors: Yuanyuan Cao, Dongfeng Diao
Format: Article
Language:English
Published: AIP Publishing LLC 2017-05-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4983577
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spelling doaj-91cb33539f4148abbd0b4091e978d10f2020-11-25T00:03:08ZengAIP Publishing LLCAIP Advances2158-32262017-05-0175055006055006-610.1063/1.4983577034705ADVPhysical mechanism of surface roughening on the radial core-shell nanowire heterostructure with alloy shellYuanyuan Cao0Dongfeng Diao1Institute of Nanosurface Science and Engineering (INSE), Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, Shenzhen University, Shenzhen 518060, ChinaInstitute of Nanosurface Science and Engineering (INSE), Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, Shenzhen University, Shenzhen 518060, ChinaWe proposed a quantitative thermodynamic theory to address the physical process of surface roughening during the epitaxial growth of core-shell NW with alloy layer. The surface roughening origins from the transformation of the Frank-van der Merwe (FM) mode to the Stranski-Krastanow (SK) mode. In addition to the radius of NW core, the composition and thickness of alloy shell could determine the growth behaviors due to their modulation to the strain. The established theoretical model not only explains the surface roughening caused by the alloy shell layer, but also provides a new way to control the growth of core-shell NW.http://dx.doi.org/10.1063/1.4983577
collection DOAJ
language English
format Article
sources DOAJ
author Yuanyuan Cao
Dongfeng Diao
spellingShingle Yuanyuan Cao
Dongfeng Diao
Physical mechanism of surface roughening on the radial core-shell nanowire heterostructure with alloy shell
AIP Advances
author_facet Yuanyuan Cao
Dongfeng Diao
author_sort Yuanyuan Cao
title Physical mechanism of surface roughening on the radial core-shell nanowire heterostructure with alloy shell
title_short Physical mechanism of surface roughening on the radial core-shell nanowire heterostructure with alloy shell
title_full Physical mechanism of surface roughening on the radial core-shell nanowire heterostructure with alloy shell
title_fullStr Physical mechanism of surface roughening on the radial core-shell nanowire heterostructure with alloy shell
title_full_unstemmed Physical mechanism of surface roughening on the radial core-shell nanowire heterostructure with alloy shell
title_sort physical mechanism of surface roughening on the radial core-shell nanowire heterostructure with alloy shell
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2017-05-01
description We proposed a quantitative thermodynamic theory to address the physical process of surface roughening during the epitaxial growth of core-shell NW with alloy layer. The surface roughening origins from the transformation of the Frank-van der Merwe (FM) mode to the Stranski-Krastanow (SK) mode. In addition to the radius of NW core, the composition and thickness of alloy shell could determine the growth behaviors due to their modulation to the strain. The established theoretical model not only explains the surface roughening caused by the alloy shell layer, but also provides a new way to control the growth of core-shell NW.
url http://dx.doi.org/10.1063/1.4983577
work_keys_str_mv AT yuanyuancao physicalmechanismofsurfacerougheningontheradialcoreshellnanowireheterostructurewithalloyshell
AT dongfengdiao physicalmechanismofsurfacerougheningontheradialcoreshellnanowireheterostructurewithalloyshell
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