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Synthesis of branched 'nanotrees' by controlled seeding of multiple branching events

Dick Thelander, Kimberly LU ; Deppert, Knut LU ; Larsson, Magnus LU ; Mårtensson, Thomas LU ; Seifert, Werner LU ; Wallenberg, Reine LU and Samuelson, Lars LU (2004) In Nature Materials 3(6). p.380-384
Abstract
The formation of nanostructures with controlled size and morphology has been the focus of intensive research in recent years(1-10). Such nanostructures are important in the development of nanoscale devices and in the exploitation of the properties of nanomaterials(9). Here we show how tree-like nanostructures ('nanotrees') can be formed in a highly controlled way. The process involves the self-assembled growth of semiconductor nanowires via the vapour-liquid-solid(11) growth mode. This bottom-up method uses initial seeding by catalytic nanoparticles(12) to form the trunk, followed by the sequential seeding of branching structures. Each level of branching is controlled in terms of branch length, diameter and number, as well as chemical... (More)
The formation of nanostructures with controlled size and morphology has been the focus of intensive research in recent years(1-10). Such nanostructures are important in the development of nanoscale devices and in the exploitation of the properties of nanomaterials(9). Here we show how tree-like nanostructures ('nanotrees') can be formed in a highly controlled way. The process involves the self-assembled growth of semiconductor nanowires via the vapour-liquid-solid(11) growth mode. This bottom-up method uses initial seeding by catalytic nanoparticles(12) to form the trunk, followed by the sequential seeding of branching structures. Each level of branching is controlled in terms of branch length, diameter and number, as well as chemical composition. We show, by high-resolution transmission electron microscopy, that the branching mechanism gives continuous crystalline (monolithic) structures throughout the extended and complex tree-like structures. The controlled seeding method that we report here has potential as a generic means of forming complex branching structures, and may also offer opportunities for applications, such as the mimicking of photosynthesis in nanotrees. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nature Materials
volume
3
issue
6
pages
380 - 384
publisher
Nature Publishing Group
external identifiers
  • pmid:15122221
  • wos:000221890700018
  • scopus:2942577861
ISSN
1476-4660
DOI
10.1038/nmat1133
language
English
LU publication?
yes
id
a7824769-f69e-4ff1-9cc6-7ad5e6121400 (old id 140899)
date added to LUP
2007-07-13 09:04:14
date last changed
2017-10-22 03:36:41
@article{a7824769-f69e-4ff1-9cc6-7ad5e6121400,
  abstract     = {The formation of nanostructures with controlled size and morphology has been the focus of intensive research in recent years(1-10). Such nanostructures are important in the development of nanoscale devices and in the exploitation of the properties of nanomaterials(9). Here we show how tree-like nanostructures ('nanotrees') can be formed in a highly controlled way. The process involves the self-assembled growth of semiconductor nanowires via the vapour-liquid-solid(11) growth mode. This bottom-up method uses initial seeding by catalytic nanoparticles(12) to form the trunk, followed by the sequential seeding of branching structures. Each level of branching is controlled in terms of branch length, diameter and number, as well as chemical composition. We show, by high-resolution transmission electron microscopy, that the branching mechanism gives continuous crystalline (monolithic) structures throughout the extended and complex tree-like structures. The controlled seeding method that we report here has potential as a generic means of forming complex branching structures, and may also offer opportunities for applications, such as the mimicking of photosynthesis in nanotrees.},
  author       = {Dick Thelander, Kimberly and Deppert, Knut and Larsson, Magnus and Mårtensson, Thomas and Seifert, Werner and Wallenberg, Reine and Samuelson, Lars},
  issn         = {1476-4660},
  language     = {eng},
  number       = {6},
  pages        = {380--384},
  publisher    = {Nature Publishing Group},
  series       = {Nature Materials},
  title        = {Synthesis of branched 'nanotrees' by controlled seeding of multiple branching events},
  url          = {http://dx.doi.org/10.1038/nmat1133},
  volume       = {3},
  year         = {2004},
}