An experimental study of atmospheric pressure dielectric barrier discharge (DBD) in argon

Subedi, Deepak Prasad; Tyata, R. B.; Shrestha, Rajendra; Wong, C. S.

doi:10.1063/1.4867673

Cited by 18 publications

(13 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, a larger amount of plasma-solution collisions will occur at higher applied voltages, which will in turn enhance the plasma treatment effect in terms of solution viscosity and conductivity. Additionally, an increase in applied discharge voltage is known to result in a higher amount of active plasma species 47 and thus more intense interactions between plasma species and solution molecules. Both bubble dynamics and plasma species concentration thus contribute to an enhanced plasma treatment efficiency, thereby leading to increased viscosity and conductivity values at higher applied voltages.…”

Section: Discussionmentioning

confidence: 99%

Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers

Rezaei

Nikiforov

Morent

2018

Sci Rep

View full text Add to dashboard Cite

Physical properties of pre-electrospinning polymer solutions play a key role in electrospinning as they strongly determine the morphology of the obtained electrospun nanofibers. In this work, an atmospheric-pressure argon plasma directly submerged in the liquid-phase was used to modify the physical properties of poly lactic acid (PLA) spinning solutions in an effort to improve their electrospinnability. The electrical characteristics of the plasma were investigated by two methods; V-I waveforms and Q-V Lissajous plots while the optical emission characteristics of the plasma were also determined using optical emission spectroscopy (OES). To perform a complete physical characterization of the plasma-modified polymer solutions, measurements of viscosity, surface tension, and electrical conductivity were performed for various PLA concentrations, plasma exposure times, gas flow rates, and applied voltages. Moreover, a fast intensified charge-couple device (ICCD) camera was used to image the bubble dynamics during the plasma treatments. In addition, morphological changes of PLA nanofibers generated from plasma-treated PLA solutions were observed by scanning electron microscopy (SEM). The performed plasma treatments were found to induce significant changes to the main physical properties of the PLA solutions, leading to an enhancement of electrospinnability and an improvement of PLA nanofiber formation.

show abstract

Section: Discussionmentioning

confidence: 99%

Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers

Rezaei

Nikiforov

Morent

2018

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Atmospheric pressure non-thermal (cold) plasma technology offers an attractive perspective in industrial processes due to the elimination of expensive vacuum equipment, easier handling of the samples [1,2]. DBD reactor can produce active species without using expensive vacuum systems.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study of Co-Axial Dielectric Barrier Discharge for Ozone Generation

et al. 2020

Self Cite

View full text Add to dashboard Cite

In this research work, co-axial cylindrical dielectric barrier discharge (CCDBD) system has been used as a ozone generator for ozone production with air as a working gas. The breakdown of air was generated inside the reactor by using low line frequency of 50 Hz and high AC voltage power supply system. The variation of air flow rate (Q) was taken from 10 to 16 l/min in this experiment. The O3 concentration denoted by C(O3) decreases with increasing the rate of flow of air at fixed discharge time and applied voltage. When discharge time (t) increases, C(O3) increases at fixed applied voltage. C(O3) also increases with increasing applied voltage (V) for constant discharge time. If the gap space between the electrodes increases then C(O3) increases. We have used glass tube reactor for this work having internal diameter of 18 mm and copper, brass and iron electrodes of diameter 8 mm. It was estimated that C(O3) found higher for copper electrode than both brass and iron electrode for certain discharge time, applied voltage and reactor diameter.

show abstract

“…Power balance characterization technique described by R. Shrestha determines electron density of DBD plasma operating at homogeneous mode (Shrestha et al, 2013;Subedi, Shrestha, Tyata, & Wong, 2017). According to this method the energy lost by each electron and ion within plasma can be written as; = .…”

Section: Power Balance Methodsmentioning

confidence: 99%

Effect of Varying Voltage on Electron Density in Oxygen Homogeneous Dielectric Barrier Discharge Under Atmospheric Pressure

Khan

Ling

Chowdhury

2019

MJS

View full text Add to dashboard Cite

The formation of uniform dielectric barrier discharges (DBDs) under atmospheric pressure is a remarkable achievement with the addition of electronegative gasses in closed reactors. This work is the part of dielectric barrier discharge achieved under atmospheric pressure. A uniform glow discharge is produced in capacitive discharge reactor. An alternating voltage source (0-2.5) kV having frequency of 50Hz is applied across the two parallel disc electrodes. A couple of dielectrics (glass) used as a discharge barriers one on each electrode. The oxygen gas injected into the reactor controlled by mass flow controller with flow rate 30ml/min. The current-voltage waveforms for oxygen discharge achieved, fulfilling the basic conditions of discharge homogeneity. The diagnostic techniques rely on electrical discharge method and power balance method to differentiate discharges and estimate the electron density for different values of applied voltages. A significant relation is found indicating the variation of electron density with applied voltage.

show abstract

An experimental study of atmospheric pressure dielectric barrier discharge (DBD) in argon

Cited by 18 publications

References 11 publications

Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers

Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers

An Experimental Study of Co-Axial Dielectric Barrier Discharge for Ozone Generation

Effect of Varying Voltage on Electron Density in Oxygen Homogeneous Dielectric Barrier Discharge Under Atmospheric Pressure

Contact Info

Product

Resources

About