Multiphase modeling of the DC plasma-water interface: application to hydrogen peroxide generation with experimental validation

Keniley, Shane
Üner, Necip Berker
Perez, Elizabeth
Sankaran, R. Mohan
Curreli, Davide
Here, we present a one-dimensional, time-dependent multi-physics model of a plasma-liquid interface that encompasses both the plasma and liquid phases using the MOOSE-based drift-diffusion-reaction software, Zapdos-Crane. The model was applied to an experimental configuration comprised of a direct-current powered argon plasma formed at the surface of an aqueous, ionically conductive solution. In this system, one of the reactions that occurs is the formation of hydroxyl radicals, which subsequently produce hydrogen peroxide. We studied potential mechanisms for hydrogen peroxide production with the plasma operated as either the cathode or anode. Experiments were performed in support of modeling to characterize the plasma and measure the aqueous hydrogen peroxide, and both modeling and experimental results show that its production is substantially higher during anodic operation. In the case of the cathodic plasma, the simulations predict that solvated electrons degrade aqueous hydrogen peroxide, and in support, adding nitrate, a known electron scavenger, to the electrolyte during cathodic operation is shown to increase the production of aqueous hydrogen peroxide by an order of magnitude in experiments.


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The main goal of this thesis is geometric and parametric analysis of a simulated cylin-drical two-gridded Radio Frequency Inductively Coupled (RF-ICP) ion thruster. Inaddition, instrumental performance of this thruster and the effects of a fixed shapeof the electrodes on ion trajectories are investigated. The simulations of the plasmaand the ion optics are performed by using COMSOL Multiphysics software. The firststep is checking the reliability of the software. Radial and axial simulation parametricresults...
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The optical analogue to electromagnetically induced transparency (EIT) is modeled for two separate systems with the same formalism and the spectral characteristics together with the generated group delay are compared. First system is a coherently coupled high-Q multi-cavity array which represents the classical EIT and is limited by the finite broadening of the cavity and the second one is a single embedded quantum dot (QD) cavity system, a cavity-QD EIT, that depends on both QD broadening and cavity propert...
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In this thesis, the dynamic performances of kinematically and dynamically adjustable planar mechanisms have been investigated. An adjustable mechanism is here defined to be a mechanism where some of the kinematic and/or dynamic parameters are changed in a controlled manner in order to optimize the dynamic behaviour of the mechanism in spite of variable operating conditions. Here, variable operating conditions refer to variable load(s) on the mechanism and/or variable desired input motion. The dynamic behavi...
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We consider an error-resilient stereoscopic streaming system that uses an H.264-based multiview video codec and a rateless Raptor code for recovery from packet losses. One aim of the present work is to suggest a heuristic methodology for modeling the end-to-end rate-distortion (RD) characteristic of such a system. Another aim is to show how to make use of such a model to optimally select the parameters of the video codec and the Raptor code to minimize the overall distortion. Specifically, the proposed syst...
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This paper presents a new deep regression model, which we call DeepDistance, for cell detection in images acquired with inverted microscopy. This model considers cell detection as a task of finding most probable locations that suggest cell centers in an image. It represents this main task with a regression task of learning an inner distance metric. However, different than the previously reported regression based methods, the DeepDistance model proposes to approach its learning as a multi-task regression pro...
Citation Formats
S. Keniley, N. B. Üner, E. Perez, R. M. Sankaran, and D. Curreli, “Multiphase modeling of the DC plasma-water interface: application to hydrogen peroxide generation with experimental validation,” PLASMA SOURCES SCIENCE & TECHNOLOGY, vol. 31, no. 7, pp. 0–0, 2022, Accessed: 00, 2023. [Online]. Available: