Role of the thermophoretic force on the transport of nanoparticles in dusty silane plasmas

A comparison, based on numerical modeling, is made between the different forces experienced by nanoparticles present in a low pressure capacitively coupled parallel-plate silane (Si H4 ) discharge. We investigate in particular the influence of the thermophoretic force on the spatial distribution of...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2005-06, Vol.71 (6 Pt 2), p.066405-066405, Article 066405
Main Authors: De Bleecker, Kathleen, Bogaerts, Annemie, Goedheer, Wim
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A comparison, based on numerical modeling, is made between the different forces experienced by nanoparticles present in a low pressure capacitively coupled parallel-plate silane (Si H4 ) discharge. We investigate in particular the influence of the thermophoretic force on the spatial distribution of the nanoparticle density profiles, due to a thermal gradient in gas temperature induced by heating or cooling of the electrodes. A series of simulations with a one-dimensional fluid model are performed with asymmetrical variation of the electrode temperatures. It appears that the resulting density profile of the nanoparticles experiences a significant shift towards the cooler electrode as soon as a temperature difference is applied. Thus thermophoresis is capable of influencing the force balance of suspended nanoparticles in the plasma, even at relatively small electrode temperature differences.
ISSN:1539-3755
1550-2376
DOI:10.1103/physreve.71.066405