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Observation of the molten state of nano-particles with an atomic force microscope

Kortegaard, Carl LU ; Deppert, Knut LU orcid ; Ismail, S. ; Junno, T. ; Larne, H. ; Magnusson, Martin LU ; Thelander, Claes LU and Samuelson, Lars LU (2002) Proceedings of 7th International Conference on Nanometer-Scale Science and Technology and 21st European Conference on Surface Science (NANO-7/ECOSS-21)
Abstract
An atomic force microscope was used to directly examine the physical state of nanometer-sized particles. The critical diameter of indium particles, where evidence of melting at room temperature was observed, was 7.8±1.2 nm. This conclusion is based on a method relying on the manipulation of particles in ambient air and at constant temperature. This method involves a simple set up that permits a combination of both manipulation and imaging of individual particles. To determine whether a particle is molten, three criteria are used: the merging of particles to form bigger spherical particles, a tip-induced shape change and the formation of nanofibres. All three criteria have been checked using other particle materials. The use of the atomic... (More)
An atomic force microscope was used to directly examine the physical state of nanometer-sized particles. The critical diameter of indium particles, where evidence of melting at room temperature was observed, was 7.8±1.2 nm. This conclusion is based on a method relying on the manipulation of particles in ambient air and at constant temperature. This method involves a simple set up that permits a combination of both manipulation and imaging of individual particles. To determine whether a particle is molten, three criteria are used: the merging of particles to form bigger spherical particles, a tip-induced shape change and the formation of nanofibres. All three criteria have been checked using other particle materials. The use of the atomic force microscope to determine whether a nanoparticle is molten, is however complicated by oxidation (Less)
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author
; ; ; ; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
6.6 to 9 nm, 293 to 298 K, nanoparticles, In, molten state, physical state, atomic force microscopy, indium particles, nanometer sized particles, critical diameter, room temperature, spherical particles, oxidation, tip induced shape change
host publication
7th International Conference on Nanometer-Scale Science and Technology and 21st European Conference on Surface Science
pages
2 pages
publisher
Lund University
conference name
Proceedings of 7th International Conference on Nanometer-Scale Science and Technology and 21st European Conference on Surface Science (NANO-7/ECOSS-21)
conference location
Malmö, Sweden
conference dates
2002-06-24 - 2002-06-28
language
English
LU publication?
yes
id
982053d8-0a04-41cc-96b2-8d809751a578 (old id 610444)
date added to LUP
2016-04-04 11:41:00
date last changed
2025-04-04 14:24:24
@inproceedings{982053d8-0a04-41cc-96b2-8d809751a578,
  abstract     = {{An atomic force microscope was used to directly examine the physical state of nanometer-sized particles. The critical diameter of indium particles, where evidence of melting at room temperature was observed, was 7.8±1.2 nm. This conclusion is based on a method relying on the manipulation of particles in ambient air and at constant temperature. This method involves a simple set up that permits a combination of both manipulation and imaging of individual particles. To determine whether a particle is molten, three criteria are used: the merging of particles to form bigger spherical particles, a tip-induced shape change and the formation of nanofibres. All three criteria have been checked using other particle materials. The use of the atomic force microscope to determine whether a nanoparticle is molten, is however complicated by oxidation}},
  author       = {{Kortegaard, Carl and Deppert, Knut and Ismail, S. and Junno, T. and Larne, H. and Magnusson, Martin and Thelander, Claes and Samuelson, Lars}},
  booktitle    = {{7th International Conference on Nanometer-Scale Science and Technology and 21st European Conference on Surface Science}},
  keywords     = {{6.6 to 9 nm; 293 to 298 K; nanoparticles; In; molten state; physical state; atomic force microscopy; indium particles; nanometer sized particles; critical diameter; room temperature; spherical particles; oxidation; tip induced shape change}},
  language     = {{eng}},
  publisher    = {{Lund University}},
  title        = {{Observation of the molten state of nano-particles with an atomic force microscope}},
  year         = {{2002}},
}