Impedance matching for an asymmetric dielectric barrier discharge plasma actuator

Singh, Kunwar P.; Roy, Subrata

doi:10.1063/1.2773932

Cited by 38 publications

(21 citation statements)

References 12 publications

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“…4b, upper curve), we are cautious to make recommendations for treatment durations shorter than about 10 s. Shimming the shunt, C Sh , and the series capacitors, C Sr , which are components of the impedance-matching modules of the plasma systems, in order to maximize the power transferred to the gas plasma (Salem et al 1998;Singh and Roy 2007) may require up to about 5 s. Even though we tend to eliminate the short-time treatment uncertainties by conducting blank runs and presetting C Sh and C Sr close to their optimal values, potential operator or instrument-setup errors make it unfeasibly for recommendation treatment times shorter than 10 s for these types of experiments.…”

Section: Conditions Of Oxidative Plasma For Achieving Permanent Adhesionmentioning

confidence: 99%

Dependence of the quality of adhesion between poly(dimethylsiloxane) and glass surfaces on the composition of the oxidizing plasma

Chau

Millare

Lin

et al. 2010

Microfluid Nanofluid

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Controlled surface oxidation of polydimethylsiloxane (PDMS) is essential for permanent adhesion between device components composed of this elastomer. The permanent adhesion between such microdevice components results from covalent crosslinking across the interfaces between PDMS and other silica-based materials, such as glass, quartz, and PDMS. Optimal duration and conditions of oxidation, attained via treatments with oxygen-containing plasma, are crucial for microfabrication procedures with quantitative yields. While insufficient PDMS oxidation does not provide high enough surface density of siloxyl groups for cross-interface linking, overoxidation of PDMS yields rough silica surface layers that prevent the adhesion between flat substrates. Ideally, for a set of plasma conditions, the range of treatment durations producing permanent adhesion should be as broad as possible: i.e., the surface oxidation of PDMS sufficient for irreversible binding has to complete significantly before the effects of overoxidation become apparent. Such a requirement assures that relatively small fluctuations in the treatment conditions will not result in over-or under-oxidation and, hence, will not compromise the yields of the fabrication procedures. We examined the dependence of the quality of adhesion (QA) between plasma-treated PDMS and glass substrates on the composition of the oxygen-containing plasma and on the radio frequency (RF) of the plasma generator. We observed that plasma generated at megahertz RF provided superior conditions than kilohertz RF. Concurrently, an increase in the oxygen content of binary gas mixtures, used for the plasma, broadened the treatment durations that afford superior QA.

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Section: Conditions Of Oxidative Plasma For Achieving Permanent Adhesionmentioning

confidence: 99%

Dependence of the quality of adhesion between poly(dimethylsiloxane) and glass surfaces on the composition of the oxidizing plasma

Chau

Millare

Lin

et al. 2010

Microfluid Nanofluid

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“…Singh and Roy have highlighted the phenomenon of power reflection due to the capacitive behavior of a DBD plasma actuator and, also, the importance of impedance matching for an optimum performance [33]. For that reason, their focus has been placed on integrating a resistance-inductor (RL) or resistance-inductor-capacitor (RLC) circuit between the power generator and plasma actuator, with a view to reducing the capacitive reactance of the latter and, hence, enhancing power transfer in the plasma.…”

Section: Power Supply System Of Plasma Reactorsmentioning

confidence: 99%

“…On the other hand, by adding an RL circuit with Rm = 0.1 ohm and Lm = 0.1 pH in parallel to the actuator the equivalent reactance becomes positive and the resistance remains constant at a value of 0.1 ohm. Under these conditions impedance matching is facilitated by a recommended power generator of low output impedance, around 0.1 ohm [33].…”

Section: Power Supply System Of Plasma Reactorsmentioning

confidence: 99%

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Energy Considerations for Plasma-Assisted N-Fixation Reactions

et al. 2014

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In a time of increasing concerns about the immense energy consumption and poor environmental performance of contemporary processes in the chemical industry, there is great need to develop novel sustainable technologies that enhance energy efficiency. There is abundant chemical literature on process innovations (laboratory-scale) around the plasma reactor itself, which, naturally, is the essential part to be intensified to achieve a satisfactory process. In essence, a plasma process needs attention beyond reaction engineering towards the process integration side and also with strong electrical engineering focus. In this mini-review, we have detailed our future focus on the process and energy intensification of plasma-based N-fixation. Three focal points are mainly stressed throughout the review: (I) the integration of renewable energy; (II) the power supply system of plasma reactors and (III) process design of industrial plasma-assisted nitrogen fixation. These different enabling strategies will be set in a holistic and synergetic picture so as to improve process performance.

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“…Other studies have been directed at optimizing these devices for improved output, [8][9][10] or toward improving the electrical energy efficiency of the plasma-actuator and power supply system. 11,12 Review articles on the operating physics and flow control applications can be found in Refs. [13][14][15] Although there are numerous in-laboratory examples of plasma actuator applications, industrial applications have been restricted by a number of practical limitations.…”

Section: Introductionmentioning

confidence: 99%

Dielectric material degradation monitoring of dielectric barrier discharge plasma actuators

Hanson

Houser

Lavoie

2014

Journal of Applied Physics

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Impedance matching for an asymmetric dielectric barrier discharge plasma actuator

Cited by 38 publications

References 12 publications

Dependence of the quality of adhesion between poly(dimethylsiloxane) and glass surfaces on the composition of the oxidizing plasma

Dependence of the quality of adhesion between poly(dimethylsiloxane) and glass surfaces on the composition of the oxidizing plasma

Energy Considerations for Plasma-Assisted N-Fixation Reactions

Dielectric material degradation monitoring of dielectric barrier discharge plasma actuators

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