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Approaches to increasing yield in evaporation/condensation nanoparticle generation

Singh, Y; Javier, JRN; Ehrman, SH; Magnusson, Martin LU and Deppert, Knut LU (2002) In Journal of Aerosol Science 33(9). p.1309-1325
Abstract
With the recent interest in the chemical, electronic and optical properties of nanometer scale metal particles, there is now interest in manufacturing these materials in larger quantities. Since both small particle size and high particle number concentrations are sought, there is a need for improved. particle generation reactors that can realize both goals. Here, results are presented for the synthesis of indium metal nanoparticles in an evaporation/condensation aerosol generator. Size distributions were measured for metal nanoparticles formed using a standard flow configuration, as well as using several variations on the standard configuration. The aim of the modifications is to increase the cooling rate and thus, to increase the... (More)
With the recent interest in the chemical, electronic and optical properties of nanometer scale metal particles, there is now interest in manufacturing these materials in larger quantities. Since both small particle size and high particle number concentrations are sought, there is a need for improved. particle generation reactors that can realize both goals. Here, results are presented for the synthesis of indium metal nanoparticles in an evaporation/condensation aerosol generator. Size distributions were measured for metal nanoparticles formed using a standard flow configuration, as well as using several variations on the standard configuration. The aim of the modifications is to increase the cooling rate and thus, to increase the nucleation rate of the nanoparticles. An increase in the number concentration of particles and, in some cases, a significant decrease in average particle size was observed when the modified reactor configurations were used. These results can be explained by the changes in the time-temperature history of the nanoparticles resulting from the modifications to the aerosol generator. A monodisperse model of nanoparticle formation and growth, accounting for nucleation, condensation and coagulation, was used to describe particle formation in the standard flow configuration, to guide the modifications, and to describe particle formation in one of the modified configurations, with qualitative agreement seen between measured and predicted particle sizes. (C) 2002 Elsevier Science Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Aerosol Science
volume
33
issue
9
pages
1309 - 1325
publisher
Elsevier
external identifiers
  • wos:000178453800006
  • scopus:0036768242
ISSN
0021-8502
DOI
10.1016/S0021-8502(02)00072-1
language
English
LU publication?
yes
id
b7f04d42-3fcb-4e15-8619-0a787345f5ea (old id 325634)
date added to LUP
2007-11-13 15:53:12
date last changed
2017-07-30 04:36:45
@article{b7f04d42-3fcb-4e15-8619-0a787345f5ea,
  abstract     = {With the recent interest in the chemical, electronic and optical properties of nanometer scale metal particles, there is now interest in manufacturing these materials in larger quantities. Since both small particle size and high particle number concentrations are sought, there is a need for improved. particle generation reactors that can realize both goals. Here, results are presented for the synthesis of indium metal nanoparticles in an evaporation/condensation aerosol generator. Size distributions were measured for metal nanoparticles formed using a standard flow configuration, as well as using several variations on the standard configuration. The aim of the modifications is to increase the cooling rate and thus, to increase the nucleation rate of the nanoparticles. An increase in the number concentration of particles and, in some cases, a significant decrease in average particle size was observed when the modified reactor configurations were used. These results can be explained by the changes in the time-temperature history of the nanoparticles resulting from the modifications to the aerosol generator. A monodisperse model of nanoparticle formation and growth, accounting for nucleation, condensation and coagulation, was used to describe particle formation in the standard flow configuration, to guide the modifications, and to describe particle formation in one of the modified configurations, with qualitative agreement seen between measured and predicted particle sizes. (C) 2002 Elsevier Science Ltd. All rights reserved.},
  author       = {Singh, Y and Javier, JRN and Ehrman, SH and Magnusson, Martin and Deppert, Knut},
  issn         = {0021-8502},
  language     = {eng},
  number       = {9},
  pages        = {1309--1325},
  publisher    = {Elsevier},
  series       = {Journal of Aerosol Science},
  title        = {Approaches to increasing yield in evaporation/condensation nanoparticle generation},
  url          = {http://dx.doi.org/10.1016/S0021-8502(02)00072-1},
  volume       = {33},
  year         = {2002},
}