| MBE growth of GaAs/InAs core-shell nanowires and fabrication of InAs nanotubes. | |
| | |
MedLine Citation:
|
PMID: 23030380 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
We present results about the growth of GaAs/InAs core-shell nanowires (NWs) using molecular beam epitaxy. The core is grown via the Ga droplet-assisted growth mechanism. For a homogeneous growth of the InAs shell, the As4 flux and substrate temperature are critical. The shell growth starts with InAs islands along the NW core, which increase in time and merge giving finally a continuous and smooth layer. At the top of the NWs a small part of the core is free of InAs indicating a crystal phase selective growth. This allows a precise measurement of the shell thickness and the fabrication of InAs nanotubes by selective etching. The strain relaxation in the shell occurs mainly via the formation of misfit dislocations and saturates at ~80%. Additionally, other types of defects are observed, namely stacking faults transferred from the core or formed in the shell, and threading dislocations. |
| | |
Authors:
|
Torsten Rieger; Martina Luysberg; Thomas Schaepers; Detlev Grützmacher; Mihail Ion Lepsa |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-10-3 |
Journal Detail:
|
Title: Nano letters Volume: - ISSN: 1530-6992 ISO Abbreviation: Nano Lett. Publication Date: 2012 Oct |
Date Detail:
|
Created Date: 2012-10-3 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101088070 Medline TA: Nano Lett Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: In Silico Prediction of Chemical Ames Mutagenicity.
Next Document: Acid-Labile mPEG-Vinyl Ether-1,2-Dioleylglycerol Lipids with Tunable pH Sensitivity: Synthesis and S...