Effect of electrode degradation on the electrical characteristics of surface dielectric barrier discharge

Selivonin, I. V.; Lazukin, A. V.; Moralev, I. A.; Krivov, S. A.

doi:10.1088/1361-6595/aacbf5

Cited by 28 publications

(20 citation statements)

References 35 publications

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“…The selection of energy density has been made since this energy has been proved to be the driving force of all the chemical reactions and therefore it directly influences service life 30 . Energy density has been chosen instead of energy because it’s easier to scale it to different kind of electrodes by taking its surface as reference.…”

Section: Resultsmentioning

confidence: 99%

Materials degradation in non-thermal plasma generators by corona discharge

Cádiz

Arrabal

Lantada

et al. 2021

Sci Rep

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Atmospheric corona discharge devices are being studied as innovative systems for cooling, sterilization, and propulsion, in several industrial fields, from robotics to medical devices, from drones to space applications. However, their industrial scale implementation still requires additional understanding of several complex phenomena, such as corrosion, degradation, and fatigue behaviour, which may affect final system performance. This study focuses on the corrosive behaviour of wires that perform as a high-voltage electrode subject to DC positive corona discharge in atmospheric air. The experiments demonstrate that the non-thermal plasma process promotes the growth of the oxidative films and modifies the physicochemical properties of the materials chosen as corona electrodes, hence affecting device operation. Surfaces exposed to this non-thermal plasma are electrically characterized by negative exponential decay of time-depend power and analysed with SEM. Implications on performance are analysed and discussed.

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Section: Resultsmentioning

confidence: 99%

Materials degradation in non-thermal plasma generators by corona discharge

Cádiz

Arrabal

Lantada

et al. 2021

Sci Rep

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“…To Previous work has shown that exposing electrodes to a conductive solution at low frequencies can cause electrode degradation. 54,55 Seen in Figure 4.1, even after many uses at a high frequency, the electrodes in Figure 4.1C have not degraded to the degree of the electrodes in When compared to the new electrodes in Figure 4.1A, the used electrodes have also degraded, though this is expected after multiple uses at high voltages and frequencies. Thus, radio frequency current provides the least electrode degradation and is the preferred frequency range for E-NAAMP.…”

Section: Frequency Effect On Electrode Integritymentioning

confidence: 90%

Nucleic Acid Amplification Using Radio Frequency Electrokinetic Heating

Yost¹

2020

Preprint

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Microfluidic PCR is one of the most common and widely used sample preparation techniques. Most heating methods for microfluidic PCR are heated in one of two ways: (1) the reaction is pumped between different boundary-heating zones, or (2) stationary reaction chamber boundaries are heated by resistive heating elements. Both heating methods are subject to limitations of boundary-driven heating, where an inherent thermal gradient exists between heater and reaction. Therefore, there is a need to develop a simple and rapid PCR heating mechanism that is not subject to limitations of boundary-driven heating.Alternating current (AC) electrokinetics has many uses in microfluidics, from dielectrophoresis, the study of induced dipoles on a particle in an electric field, to electrokinetic fluid pumping, where conductivity and thermal gradients drive fluid flow. A common side effect I would also like to thank my lab mates Steven Doria and Edwin Lavi for introducing me to the fields of microfluidics and lithography. In addition, I would like to thank my other lab mates, Md Nazibul Islam for his assistance with device photography and COMSOL simulations, and Yuncheng (Max) Yu for taking SEM images of electrode chips. A general thanks goes to all of my lab mates for their support, wisdom, and advice. My thanks also extend to my previous scientific mentors at Colorado State University & Boston Biochem, where my passion for engineering and biotechnology grew into what it is today. Finally, I would like to thank my family and friends I have made through Chemical Engineering and Club Swimming for their support, laughter, and advice during my time at Texas A&M University. I could not have achieved what I did without them. vi CONTRIBUTORS AND FUNDING SOURCES Contributors This work was supervised by a thesis committee consisting of Professor Gagnon (advisor) & Professor Ugaz of the Department of Chemical Engineering and Professor Jain of the Department of Biomedical Engineering. COMSOL simulations of electrokinetic heating were performed in collaboration with Md Nazibul Islam. Additionally, various pictures for figures & diagrams were taken by Md Nazibul Islam. Scanning electron microscope (SEM) images of electrodes were taken by Yuncheng (Max) Yu. All other work conducted for this thesis was completed by the student independently,

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“…The selection of energy density has been made since this energy has been proved to be the driving force of all the chemical reactions and therefore it directly influences service life [29] . Energy density has been chosen instead of energy because it's easier to scale it to different kind of electrodes by taking its surface as reference.…”

Section: 2-accelerated Degradation Under Corona Discharge Phenomenamentioning

confidence: 99%

Materials degradation in non- thermal plasma generators by corona discharge

Cogollo¹,

Al²,

Ad³

et al. 2021

Preprint

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Atmospheric corona discharge devices are being studied as innovative systems for cooling, sterilization and propulsion, in several industrial fields, from robotics to medical devices, from drones to space applications. However, their industrial scale implementation still requires additional understanding of several complex phenomena, such as corrosion, degradation and fatigue behaviour, which may affect final system performance. This study focuses on the corrosive behaviour of wires that perform as a high-voltage electrodes subject to DC positive corona discharge in atmospheric air. The experiments demonstrate that the non-thermal plasma process promotes the growth of the oxidative films and modifies the physicochemical properties of the materials chosen as corona electrodes, hence affecting device operation. Surfaces exposed to this non-thermal plasma are electrically characterized by negative exponential decay of time-depend power and analysed with SEM. Implications on performance are analysed and discussed.

show abstract

Effect of electrode degradation on the electrical characteristics of surface dielectric barrier discharge

Cited by 28 publications

References 35 publications

Materials degradation in non-thermal plasma generators by corona discharge

Materials degradation in non-thermal plasma generators by corona discharge

Nucleic Acid Amplification Using Radio Frequency Electrokinetic Heating

Materials degradation in non- thermal plasma generators by corona discharge

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