Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Gold nanoparticles : Production, reshaping, and thermal charging

Magnusson, Martin H. LU ; Deppert, Knut LU orcid ; Malm, Jan Olle LU ; Bovin, Jan Olov LU and Samuelson, Lars LU (1999) In Journal of Nanoparticle Research 1(2). p.243-251
Abstract

Gold nanoparticles are of great interest for various nanoelectronic applications, e.g., for making single electron transistors or very fine leads to molecular size entities. For this and other applications, it is important that all particles have controllable size and shape. In this paper, we describe the production of size-selected gold aerosol particles in the 20 nm range made by evaporation in a high-temperature tube furnace and subsequent size selection. To obtain spherical particles, it was necessary to reshape the particles at high temperature, which was investigated for temperatures between 25°C and 1200°C. High-resolution transmission electron microscopy showed that the degree of crystallinity became higher for higher reshaping... (More)

Gold nanoparticles are of great interest for various nanoelectronic applications, e.g., for making single electron transistors or very fine leads to molecular size entities. For this and other applications, it is important that all particles have controllable size and shape. In this paper, we describe the production of size-selected gold aerosol particles in the 20 nm range made by evaporation in a high-temperature tube furnace and subsequent size selection. To obtain spherical particles, it was necessary to reshape the particles at high temperature, which was investigated for temperatures between 25°C and 1200°C. High-resolution transmission electron microscopy showed that the degree of crystallinity became higher for higher reshaping temperature. During reshaping at high temperature, an anomalous charging behavior was discovered, whereby negatively as well as positively charged particles became multiply negatively charged. Possible mechanisms for explaining this thermally activated phenomenon are discussed.

(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
Gold, Nanoparticles, Particle synthesis, Size selection, Thermal charging
in
Journal of Nanoparticle Research
volume
1
issue
2
pages
9 pages
publisher
Springer
external identifiers
  • scopus:0000683405
ISSN
1388-0764
DOI
10.1023/A:1010012802415
language
English
LU publication?
yes
id
9d4cc537-5d97-452d-b77e-b55b27da0db1
date added to LUP
2019-05-08 16:13:05
date last changed
2022-04-25 23:28:22
@article{9d4cc537-5d97-452d-b77e-b55b27da0db1,
  abstract     = {{<p>Gold nanoparticles are of great interest for various nanoelectronic applications, e.g., for making single electron transistors or very fine leads to molecular size entities. For this and other applications, it is important that all particles have controllable size and shape. In this paper, we describe the production of size-selected gold aerosol particles in the 20 nm range made by evaporation in a high-temperature tube furnace and subsequent size selection. To obtain spherical particles, it was necessary to reshape the particles at high temperature, which was investigated for temperatures between 25°C and 1200°C. High-resolution transmission electron microscopy showed that the degree of crystallinity became higher for higher reshaping temperature. During reshaping at high temperature, an anomalous charging behavior was discovered, whereby negatively as well as positively charged particles became multiply negatively charged. Possible mechanisms for explaining this thermally activated phenomenon are discussed.</p>}},
  author       = {{Magnusson, Martin H. and Deppert, Knut and Malm, Jan Olle and Bovin, Jan Olov and Samuelson, Lars}},
  issn         = {{1388-0764}},
  keywords     = {{Gold; Nanoparticles; Particle synthesis; Size selection; Thermal charging}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{2}},
  pages        = {{243--251}},
  publisher    = {{Springer}},
  series       = {{Journal of Nanoparticle Research}},
  title        = {{Gold nanoparticles : Production, reshaping, and thermal charging}},
  url          = {{http://dx.doi.org/10.1023/A:1010012802415}},
  doi          = {{10.1023/A:1010012802415}},
  volume       = {{1}},
  year         = {{1999}},
}