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Pseudo-particle continuum modelling of nanowire growth in aerotaxy

Deppert, Knut LU orcid ; Magnusson, Martin H. LU ; Sivakumar, Sudhakar LU ; Samuelson, Lars LU and Johansson, Jonas LU orcid (2020) European Aerosol Conference 2020
Abstract
Aerotaxy growth of GaAs nanowires has shown to be capable of making GaAs wires, GaAsxP1-xwires (Metaferia, 2016) and even pn-junctions with phovovoltaic properties. With a goal of better understanding the aerotaxy process, we have developed a model for nanowire growth in Aerotaxy, based on a surface diffusion model for substrate-based growth. Our model considers the growth conditions, varying in time and space, as the seed particles and growing nanowires pass through the reactor. The growth is modeled as a chemical reaction, where gases but also particles are described as chemical species. By interpreting the continuous Au and GaAs species as wires with a length corresponding to the amount of material at that point, the particulate nature... (More)
Aerotaxy growth of GaAs nanowires has shown to be capable of making GaAs wires, GaAsxP1-xwires (Metaferia, 2016) and even pn-junctions with phovovoltaic properties. With a goal of better understanding the aerotaxy process, we have developed a model for nanowire growth in Aerotaxy, based on a surface diffusion model for substrate-based growth. Our model considers the growth conditions, varying in time and space, as the seed particles and growing nanowires pass through the reactor. The growth is modeled as a chemical reaction, where gases but also particles are described as chemical species. By interpreting the continuous Au and GaAs species as wires with a length corresponding to the amount of material at that point, the particulate nature can be taken into account, without the arduous task of explicit particle modeling. Pseudo-particle modelling can potentially be used as a more general strategy for gas phase particle growth. (Less)
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organization
publishing date
type
Contribution to conference
publication status
published
subject
conference name
European Aerosol Conference 2020
conference location
Aachen, Germany
conference dates
2020-08-31 - 2020-09-04
language
English
LU publication?
yes
id
5a09b1ec-ee2c-455c-926b-3f71bcf7f743
date added to LUP
2020-11-30 09:56:53
date last changed
2022-04-05 14:58:21
@misc{5a09b1ec-ee2c-455c-926b-3f71bcf7f743,
  abstract     = {{Aerotaxy growth of GaAs nanowires has shown to be capable of making GaAs wires, GaAsxP1-xwires (Metaferia, 2016) and even pn-junctions with phovovoltaic properties. With a goal of better understanding the aerotaxy process, we have developed a model for nanowire growth in Aerotaxy, based on a surface diffusion model for substrate-based growth. Our model considers the growth conditions, varying in time and space, as the seed particles and growing nanowires pass through the reactor. The growth is modeled as a chemical reaction, where gases but also particles are described as chemical species. By interpreting the continuous Au and GaAs species as wires with a length corresponding to the amount of material at that point, the particulate nature can be taken into account, without the arduous task of explicit particle modeling. Pseudo-particle modelling can potentially be used as a more general strategy for gas phase particle growth.}},
  author       = {{Deppert, Knut and Magnusson, Martin H. and Sivakumar, Sudhakar and Samuelson, Lars and Johansson, Jonas}},
  language     = {{eng}},
  month        = {{08}},
  title        = {{Pseudo-particle continuum modelling of nanowire growth in aerotaxy}},
  year         = {{2020}},
}