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Accueil > Séminaires et conférences > Séminaires, soutenances de thèses et HDR précédents > 2010 > Séminaires 2010 > Le jeudi 20 mai à 11h

Le jeudi 20 mai à 11h

Zhi Cao, Loughborough University, UK - Large-scale spatially extended atmospheric pressure plasma systems

Jeudi 20 mai à 11 H - Ecole Polytechnique Palaiseau (Salle de conférence du Lix)

Cold atmospheric pressure plasmas have gradually become
an active research area in plasma science in the past
twenty years and are unlocking many opportunities of
profound implications. The chamber-free cold atmospheric
plasmas open doors for new and exciting applications.

At atmospheric pressure, the collision frequency is in the
terahertz range and the electron mean-free path is at most
a few micrometers. The so-called glow-to-arc transition
has to be restrained in order to obtain a stable cold
plasma. Plasma source design is one of the key issues in
atmospheric pressure plasmas. For applications that
require treatment of large but flat surfaces, one can
easily use dielectric barrier discharge or RF atmospheric
pressure glow discharge with a width scale > 1 m. However,
for those popular uneven objects, treatment in the
afterglow of a plasma is an option. The afterglow
condition may greatly compromise the treatment efficacy
especially for those treatments favoring reactive species
due to recombination.

In this seminar, a group of novel spatially-extended
atmospheric pressure plasma sources, namely atmospheric
pressure plasma jet and jet arrays, will be introduced.
These plasma sources are able to directly produce plasma
species on three-dimensional objects, and have proved
themselves as a potential processing technology for plasma
medicine and other large-scale applications. The related
issues such as stability, uniformity, reactivity and
scalability will be stressed."


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Tutelles : CNRS Ecole Polytechnique Sorbonne Université Université Paris Sud Observatoire de Paris Convention : CEA
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Mentions légales
Exploitant du site : Laboratoire de Physique des Plasmas, Ecole Polytechnique route de Saclay F-91128 PALAISEAU CEDEX
Hébergeur : Laboratoire de Physique des Plasmas, Ecole Polytechnique route de Saclay F-91128 PALAISEAU CEDEX
Directeur de la publication : Pascal Chabert (Directeur)