Safeguarding against Inactivation Temperatures during Plasma Treatment of Skin: Multiphysics Model and Phase Field Method

Beni, Mehrdad Shahmohammadi; Yu, K.N.

doi:10.3390/mca22010024

Cited by 3 publications

(2 citation statements)

References 30 publications

(41 reference statements)

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“…For example, in a previous study, the plasma frequency was set to be at 5 kHz and the pulse width was set at 0.50 µs [22]. Moreover, the fractions of plasma constituents were found to be small and therefore no significant additional heat was produced as a result of reactions in the discharge, so the bulk temperature of the carrier gas would be the dominating factor in determining the plume temperature [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamics Analysis of Cold Plasma Plume Mixing with Blood Using Level Set Method Coupled with Heat Transfer

Beni

2017

Applied Sciences

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Cold plasmas were proposed for treatment of leukemia. In the present work, conceptual designs of mixing chambers that increased the contact between the two fluids (plasma and blood) through addition of obstacles within rectangular-block-shaped chambers were proposed and the dynamic mixing between the plasma and blood were studied using the level set method coupled with heat transfer. Enhancement of mixing between blood and plasma in the presence of obstacles was demonstrated. Continuous tracking of fluid mixing with determination of temperature distributions was enabled by the present model, which would be a useful tool for future development of cold plasma devices for treatment of blood-related diseases such as leukemia.

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Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamics Analysis of Cold Plasma Plume Mixing with Blood Using Level Set Method Coupled with Heat Transfer

Beni

2017

Applied Sciences

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“…Such theoretical models, particularly in a time-dependent (i.e., dynamic) manner, would be critical in the success in applying CAPs to dentistry. Our group previously examined the interaction of CAPs with water medium [44], blood [45], and skin [46] using the finite element method (FEM). More recently, we studied the transport mechanism of OH radicals in CAP discharges and their dispersion and distribution over a skin layer [47], which considered both the diffusion and convection mechanisms in a two-phase flow system (i.e., CAP carrier gas and ambient air).…”

Section: Introductionmentioning

confidence: 99%

Dispersion of OH Radicals in Applications Related to Fear-Free Dentistry Using Cold Plasma

Beni

Han

2019

Applied Sciences

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Cold atmospheric plasmas (CAPs) are being used in applications related to dentistry. Potential benefits include tooth whitening/bleaching, the sterilization of dental cavities, and root canal disinfection. Generated reactive species, such as hydroxyl (OH) radicals, play a critical role in the effectiveness of CAPs in dentistry. In the present work, the mandibular jaw and teeth were modeled. The propagation of CAP plume in ambient air was dynamically tracked using the level set method. The transport and dispersion OH radicals away from the nozzle and towards the teeth under treatment were also tracked. The distributions of concentration of OH radicals over the teeth were obtained for nozzle to tooth distances of 2 and 4 mm. The discharge of the OH radicals out of the nozzle was found to be asymmetrical. Interestingly, depending on the type of tooth treated, the dispersion of OH radicals out of the nozzle could be altered. The present model and obtained results could be useful for advancements towards a fear-free dentistry using CAPs.

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Computational cold plasma dynamics and its potential application in food processing

Manoharan

Radhakrishnan

2021

Reviews in Chemical Engineering

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Cold plasma is a novel nonthermal technology that has been used for preserving and maintaining the quality of food materials. Researchers developed numerous cold plasma equipment to study the effect of plasma on food materials; however, the degree of processing such as flow of plasma species from the source of plasma to the food material and their interaction/diffusion into the food, differs with respect to the equipment. The computational study can simulate the flow dynamics of plasma which in turn can improve the efficiency of processing and design aspects. Computational fluid dynamics (CFD) is the most reliable, cost-effective, and robust numerical tool used for simulating various high-end food processing technologies. In cold plasma processing, computational study aids in revealing the distribution of reactive species and their flow dynamics on the target surface. As CFD studies on plasma interaction with food materials are not available, this review is focused on covering the basics of using CFD in cold plasma simulation. It also explores the significant use of CFD in cold plasma simulation in various sectors along with its possible and futuristic applications in food processing.

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Safeguarding against Inactivation Temperatures during Plasma Treatment of Skin: Multiphysics Model and Phase Field Method

Cited by 3 publications

References 30 publications

Computational Fluid Dynamics Analysis of Cold Plasma Plume Mixing with Blood Using Level Set Method Coupled with Heat Transfer

Computational Fluid Dynamics Analysis of Cold Plasma Plume Mixing with Blood Using Level Set Method Coupled with Heat Transfer

Dispersion of OH Radicals in Applications Related to Fear-Free Dentistry Using Cold Plasma

Computational cold plasma dynamics and its potential application in food processing

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