Solitary filamentary structures and nanosecond dynamics in atmospheric-pressure plasmas driven by tailored dc pulses

Wu, S., Lu, X. P., Ostrikov, K., Liu, D., & Pan, Y. (2011) Solitary filamentary structures and nanosecond dynamics in atmospheric-pressure plasmas driven by tailored dc pulses. Applied Physics Letters, 99(16), p. 161503.

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Abstract

Nanosecond dynamics of two separated discharge cycles in an asymmetric dielectric barrier discharge is studied using time-resolved current and voltage measurements synchronized with high-speed (∼5 ns) optical imaging. Nanosecond dc pulses with tailored raise and fall times are used to generate solitary filamentary structures (SFSs) during the first cycle and a uniform glow during the second. The SFSs feature ∼1.5 mm thickness, ∼1.9 A peak current, and a lifetime of several hundred nanoseconds, at least an order of magnitude larger than in common microdischarges. This can be used in alternating localized and uniform high-current plasma treatments in various applications.

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4 citations in Scopus
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9 citations in Web of Science®

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ID Code: 73677
Item Type: Journal Article
Refereed: Yes
DOI: 10.1063/1.3655201
ISSN: 0003-6951
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 10 Jul 2014 06:21
Last Modified: 10 Jul 2014 23:03

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