Type

Journal Article

Authors

Justin D. Holmes
Michael A. Morris
Achintya Singha
Michele Conroy
Kamil Rahme
Tandra Ghoshal
Dipanwita Majumdar
Jessica Doherty
Subhajit Biswas

Subjects

Chemistry

Topics
one dimensional nanostructure nanostructured materials liquid injections process control nanowire growth multiple layers germanium nanoparticles controllable morphology metal nanoparticles agglomeration nanostructures iron oxides nanowire devices magnetite chemical vapor deposition catalysts nanowires germanium nanowires magnetite nanoparticles

Diameter controlled germanium nanowires with lamellar twinning and polytypes (2015)

Abstract One-dimensional nanostructures with controllable morphologies and defects are appealing for use in nanowire devices. This paper details the influence of colloidal magnetite iron oxide nanoparticle seeds to regulate the radial dimension and twin boundary formation in Ge nanowires grown through a liquid-injection chemical vapor deposition process. Control over the mean nanowire diameter, even in the sub-10 nm regime, was achieved due to the minimal expansion and aggregation of iron oxide nanoparticles during the growth process. The uncommon occurrence of heterogeneously distributed multiple layer {111} twins, directed perpendicular to the nanowire growth axis, were also observed in 〈111〉-directed Ge nanowires, especially those synthesized from patterned hemispherical Fe3O4 nanodot catalysts. Consecutive twin planes along 〈111〉-oriented nanowires resulted in a local phase transformation from 3C diamond cubic to hexagonal 4H allotrope. Localized polytypic crystal phase heretostructures were formed along 〈111〉-oriented Ge nanowire using magnetite nanodot catalysts.
Collections Ireland -> University College Cork -> Materials Chemistry and Analysis Group
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Ireland -> University College Cork -> Micro-Nanoelectronics Centre
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Ireland -> University College Cork -> Materials Chemistry and Analysis Group - Journal articles
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Full list of authors on original publication

Justin D. Holmes, Michael A. Morris, Achintya Singha, Michele Conroy, Kamil Rahme, Tandra Ghoshal, Dipanwita Majumdar, Jessica Doherty, Subhajit Biswas

Experts in our system

1
Justin D. Holmes
University College Cork
Total Publications: 287
 
2
Michael A. Morris
University College Cork
Total Publications: 164
 
3
Achintya Singha
University College Cork
Total Publications: 8
 
4
Michele Conroy
University College Cork
Total Publications: 10
 
5
Kamil Rahme
University College Cork
Total Publications: 23
 
6
Tandra Ghoshal
University College Cork
Total Publications: 32
 
7
Dipanwita Majumdar
University College Cork
Total Publications: 4
 
8
Jessica Doherty
University College Cork
Total Publications: 12
 
9
Subhajit Biswas
University College Cork
Total Publications: 43