Gold nanoparticles : Production, reshaping, and thermal charging
(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)
- author
- Magnusson, Martin H. LU ; Deppert, Knut LU ; Malm, Jan Olle LU ; Bovin, Jan Olov LU and Samuelson, Lars LU
- organization
- publishing date
- 1999-01-01
- 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}}, }