Crystalline Si nanoparticles below crystallization threshold : effects of collisional heating in non-thermal atmospheric-pressure microplasmas

Askari, S., Levchenko, I., Ostrikov, K., Maguire, P., & Mariotti, D. (2014) Crystalline Si nanoparticles below crystallization threshold : effects of collisional heating in non-thermal atmospheric-pressure microplasmas. Applied Physics Letters, 104(16), p. 163103.

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Abstract

Nucleation and growth of highly crystalline silicon nanoparticles in atmospheric-pressure low-temperature microplasmas at gas temperatures well below the Si crystallization threshold and within a short (100 μs) period of time are demonstrated and explained. The modeling reveals that collision-enhanced ion fluxes can effectively increase the heat flux on the nanoparticle surface and this heating is controlled by the ion density. It is shown that nanoparticles can be heated to temperatures above the crystallization threshold. These combined experimental and theoretical results confirm the effective heating and structure control of Si nanoparticles at atmospheric pressure and low gas temperatures.

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17 citations in Scopus
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20 citations in Web of Science®

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ID Code: 73502
Item Type: Journal Article
Refereed: Yes
Additional Information: Funding Details: EP/K022237/1, EPSRC, Engineering and Physical Sciences Research Council
DOI: 10.1063/1.4872254
ISSN: 0003-6951
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 08 Jul 2014 05:36
Last Modified: 22 Jul 2014 02:36

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