Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

A thermal evaporator for aerosol core-shell nanoparticle synthesis

Snellman, Markus LU ; Eom, Namsoon LU ; Messing, Maria E. LU and Deppert, Knut LU orcid (2024) In Journal of Aerosol Science 175.
Abstract

Segregated bimetallic nanoparticles like core-shell nanoparticles are of interest in various fields including biomedicine, catalysis, and optoelectronics. Aerosol technology is an optimal platform to control nanoparticle size, structure, and composition, which are some of the most important parameters tuning the material performance for the intended applications. Here, we develop a novel evaporator design to coat core particles on-line with a shell directly in the gas phase. The evaporator employs a local heater that decouples heating the evaporating material from the aerosol particles to limit core-shell alloying. We characterize the system by evaporating Zn onto core particles of Au, Sn, and Bi and demonstrate the core-shell particle... (More)

Segregated bimetallic nanoparticles like core-shell nanoparticles are of interest in various fields including biomedicine, catalysis, and optoelectronics. Aerosol technology is an optimal platform to control nanoparticle size, structure, and composition, which are some of the most important parameters tuning the material performance for the intended applications. Here, we develop a novel evaporator design to coat core particles on-line with a shell directly in the gas phase. The evaporator employs a local heater that decouples heating the evaporating material from the aerosol particles to limit core-shell alloying. We characterize the system by evaporating Zn onto core particles of Au, Sn, and Bi and demonstrate the core-shell particle formation with controllable shell thickness in each material system. We discuss simple models to explain the observed growth process inside the evaporator and the resulting shell formation.

(Less)
Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Aerosol technology, Bimetallic nanoparticles, Core-shell nanoparticles, Thermal evaporation
in
Journal of Aerosol Science
volume
175
article number
106276
publisher
Elsevier
external identifiers
  • scopus:85173017945
ISSN
0021-8502
DOI
10.1016/j.jaerosci.2023.106276
language
English
LU publication?
yes
id
aa097402-adbe-4f03-8610-ca0e7caf9a8e
date added to LUP
2023-11-30 13:53:36
date last changed
2023-12-05 12:29:43
@article{aa097402-adbe-4f03-8610-ca0e7caf9a8e,
  abstract     = {{<p>Segregated bimetallic nanoparticles like core-shell nanoparticles are of interest in various fields including biomedicine, catalysis, and optoelectronics. Aerosol technology is an optimal platform to control nanoparticle size, structure, and composition, which are some of the most important parameters tuning the material performance for the intended applications. Here, we develop a novel evaporator design to coat core particles on-line with a shell directly in the gas phase. The evaporator employs a local heater that decouples heating the evaporating material from the aerosol particles to limit core-shell alloying. We characterize the system by evaporating Zn onto core particles of Au, Sn, and Bi and demonstrate the core-shell particle formation with controllable shell thickness in each material system. We discuss simple models to explain the observed growth process inside the evaporator and the resulting shell formation.</p>}},
  author       = {{Snellman, Markus and Eom, Namsoon and Messing, Maria E. and Deppert, Knut}},
  issn         = {{0021-8502}},
  keywords     = {{Aerosol technology; Bimetallic nanoparticles; Core-shell nanoparticles; Thermal evaporation}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Aerosol Science}},
  title        = {{A thermal evaporator for aerosol core-shell nanoparticle synthesis}},
  url          = {{http://dx.doi.org/10.1016/j.jaerosci.2023.106276}},
  doi          = {{10.1016/j.jaerosci.2023.106276}},
  volume       = {{175}},
  year         = {{2024}},
}