Data di Pubblicazione:
2019
Citazione:
Planetary silver nanoparticles originating from a magnetron sputter plasma / S. Marom, M. Plesser, R. Modi, N. Manini, M. Di Vece. - In: JOURNAL OF PHYSICS D. APPLIED PHYSICS. - ISSN 0022-3727. - 52:9(2019 Feb 27). [10.1088/1361-6463/aaf783]
Abstract:
In a gas aggregation cluster source, nanoparticles are formed by aggregation of single atoms
to particles as well as by agglomeration of smaller particles to form larger particles. Because
the small particles are often electrically charged, it is possible that particles are mutually
attracted or repelled by electric forces. In this work we report the observation of bound multi-
nanoparticle systems which are the result of the electrical and centrifugal forces acting on
nanoparticles in a magnetron sputtering cluster source. Transmission electron microscopy
analysis of the deposited ‘planetary’ nanoparticle systems exhibits characteristic inter-particle
distances and sizes, consistent with different charge states of the particles. Simulations
confirm the presence of metastable bound nanoparticle systems up to at least 7/8 satellites.
The discovery of such ‘planetary’ nanoparticle systems inside a cluster source opens up
possibilities for more research into their properties and how they can be further controlled
and explored.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
clusters, nanoparticles, magnetron sputter; silver nanoparticles; planetary; satellites; gas aggregation cluster source; particle orbits
Elenco autori:
S. Marom, M. Plesser, R. Modi, N. Manini, M. Di Vece
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