Controlling nanowire growth through electric field-induced deformation of the catalyst droplet

Semiconductor nanowires with precisely controlled structure, and hence well-defined electronic and optical properties, can be grown by self-assembly using the vapour–liquid–solid process. The structure and chemical composition of the growing nanowire is typically determined by global parameters such...

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Main Authors:	Panciera, Federico, Norton, Michael M., Alam, Sardar B., Hofmann, Stephan, Mølhave, Kristian, Ross, Frances M.
Format:	Online
Language:	English
Published:	Nature Publishing Group 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4974563/

id	pubmed-4974563
recordtype	oai_dc
spelling	pubmed-49745632016-08-18 Controlling nanowire growth through electric field-induced deformation of the catalyst droplet Panciera, Federico Norton, Michael M. Alam, Sardar B. Hofmann, Stephan Mølhave, Kristian Ross, Frances M. Article Semiconductor nanowires with precisely controlled structure, and hence well-defined electronic and optical properties, can be grown by self-assembly using the vapour–liquid–solid process. The structure and chemical composition of the growing nanowire is typically determined by global parameters such as source gas pressure, gas composition and growth temperature. Here we describe a more local approach to the control of nanowire structure. We apply an electric field during growth to control nanowire diameter and growth direction. Growth experiments carried out while imaging within an in situ transmission electron microscope show that the electric field modifies growth by changing the shape, position and contact angle of the catalytic droplet. This droplet engineering can be used to modify nanowires into three dimensional structures, relevant to a range of applications, and also to measure the droplet surface tension, important for quantitative development of strategies to control nanowire growth. Nature Publishing Group 2016-07-29 /pmc/articles/PMC4974563/ /pubmed/27470536 http://dx.doi.org/10.1038/ncomms12271 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Panciera, Federico Norton, Michael M. Alam, Sardar B. Hofmann, Stephan Mølhave, Kristian Ross, Frances M.
spellingShingle	Panciera, Federico Norton, Michael M. Alam, Sardar B. Hofmann, Stephan Mølhave, Kristian Ross, Frances M. Controlling nanowire growth through electric field-induced deformation of the catalyst droplet
author_facet	Panciera, Federico Norton, Michael M. Alam, Sardar B. Hofmann, Stephan Mølhave, Kristian Ross, Frances M.
author_sort	Panciera, Federico
title	Controlling nanowire growth through electric field-induced deformation of the catalyst droplet
title_short	Controlling nanowire growth through electric field-induced deformation of the catalyst droplet
title_full	Controlling nanowire growth through electric field-induced deformation of the catalyst droplet
title_fullStr	Controlling nanowire growth through electric field-induced deformation of the catalyst droplet
title_full_unstemmed	Controlling nanowire growth through electric field-induced deformation of the catalyst droplet
title_sort	controlling nanowire growth through electric field-induced deformation of the catalyst droplet
description	Semiconductor nanowires with precisely controlled structure, and hence well-defined electronic and optical properties, can be grown by self-assembly using the vapour–liquid–solid process. The structure and chemical composition of the growing nanowire is typically determined by global parameters such as source gas pressure, gas composition and growth temperature. Here we describe a more local approach to the control of nanowire structure. We apply an electric field during growth to control nanowire diameter and growth direction. Growth experiments carried out while imaging within an in situ transmission electron microscope show that the electric field modifies growth by changing the shape, position and contact angle of the catalytic droplet. This droplet engineering can be used to modify nanowires into three dimensional structures, relevant to a range of applications, and also to measure the droplet surface tension, important for quantitative development of strategies to control nanowire growth.
publisher	Nature Publishing Group
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4974563/
_version_	1613621944573231104

Controlling nanowire growth through electric field-induced deformation of the catalyst droplet

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