Optical characteristics of the filamentary and diffuse modes in surface dielectric barrier discharge

Zhang, Ying; Li, Jie; Jiang, Nan; Shang, Kefeng; Lü, Na; Wu, Yan

doi:10.1016/j.saa.2016.05.043

Cited by 10 publications

(5 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the applied voltage increased, the content of carbon decreased while the content of nitrogen and oxygen increased after APGD plasma treatment. The phenomenon could be explained by active particles, such as + N , 2 OH, O 3 , being formed after the plasma generator worked in ambient air [24][25][26]. The chemical bonds in the protein molecules were broken when these active particles touched the surface of silk fabric.…”

Section: Xps Analysismentioning

confidence: 99%

The effect of atmospheric pressure glow discharge plasma treatment on the dyeing properties of silk fabric

Cheng¹,

Hu²,

Jin³

2019

Plasma Sci. Technol.

View full text Add to dashboard Cite

In this study, the effects of plasma treatment parameters on surface morphology, chemical constituent, dyeability and color fastness of silk fabric were investigated. Atmospheric pressure glow discharge plasma generated with different applied voltages (0 kV to 45 kV) was used to treat the surface of silk fabrics. C I Natural Yellow 3 was used to dye untreated and plasmatreated silk fabrics. The physical analysis based on scanning electron microscopy showed that the surface of silk fabrics was affected by plasma treatment. The chemical analysis was investigated with x-ray photoelectron spectroscopy and attenuated total reflection Fourier transform infrared spectroscopy. The results showed that the content of C 1s decreased with the increasing applied voltage, the content of N 1s and O 1s increased with the increasing applied voltage. The increasing K/S values represented that the dyeability of silk fabrics was improved after plasma treatment. The color fastness to dry and wet rubbing was decreased after plasma treatment.

show abstract

Section: Xps Analysismentioning

confidence: 99%

The effect of atmospheric pressure glow discharge plasma treatment on the dyeing properties of silk fabric

Cheng¹,

Hu²,

Jin³

2019

Plasma Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…The temporal–spatial resolved diagnosis of plasma characteristics, including plasma spectra and ICCD images, are very important to understand the dynamics processes and rapid breakdown mechanism in NPDBD [34,35]. By these diagnoses, the reduced electric field, the vibrational population of N 2 (C 3 Π u ), plasma dynamic evolution, can be studied to investigate plasma processes.…”

Section: Introductionmentioning

confidence: 99%

Discharge Regimes Transition and Characteristics Evolution of Nanosecond Pulsed Dielectric Barrier Discharge

et al. 2019

View full text Add to dashboard Cite

Discharge regime transition in a single pulse can present the breakdown mechanism of nanosecond pulsed dielectric barrier discharge. In this paper, regime transitions between streamer, diffuse, and surface discharges in nanosecond pulsed dielectric barrier discharge are studied experimentally using high resolution temporal–spatial spectra and instantaneous exposure images. After the triggering time of 2–10 ns, discharge was initiated with a stable initial streamer channel propagation. Then, transition of streamer-diffuse modes could be presented at the time of 10–34 ns, and a surface discharge can be formed sequentially on the dielectric plate. In order to analyze the possible reason for the varying discharge regimes in a single discharge pulse, the temporal–spatial distribution of vibrational population of molecular nitrogen N2 (C3Πu, v = 0,1,2) and reduced electric field were calculated by the temporal–spatial emission spectra. It is found that at the initial time, a distorted high reduced electric field was formed near the needle electrode, which excited the initial streamer. With the initial streamer propagating to the dielectric plate, the electric field was rebuilt, which drives the transition from streamer to diffuse, and also the propagation of surface discharge.

show abstract

“…Therefore, differences in the O/C ratio between the same TiO 2 coating on FTO and PET can only be attributed to the different concentrations of carbon present on FTO and PET substrates. [41] The main portion of the plasma in vDBD is in filamentary mode and microdischarges are oriented perpendicularly to the surface. 71 at% of carbon in its polymeric chain.…”

Section: Resultsmentioning

confidence: 99%

“…The filamentary microdischarges are distributed randomly in space and time, therefore treatment with filamentary plasma can lead to inhomogeneous surface treatment, whereas the diffuse plasma results in the homogeneous surface treatment. [41] The main portion of the plasma in vDBD is in filamentary mode and microdischarges are oriented perpendicularly to the surface. On the other hand, coplanar DBD generates microdischarges in both the filamentary and diffuse mode and more importantly, the microdischarges are oriented parallel to the surface.…”

Section: Resultsmentioning

confidence: 99%

Mineralization of flexible mesoporous TiO₂ photoanodes using two low‐temperature dielectric barrier discharges in ambient air

Shekargoftar

Dzik

Ďurašová

et al. 2018

Contributions to Plasma Physics

View full text Add to dashboard Cite

Two types of dielectric barrier discharges (DBDs), volume DBD (called Industrial Corona) and coplanar DBD, were used for low temperature (70 • C) atmospheric pressure plasma mineralization of mesoporous methyl-silica/titanium dioxide nanocomposite photoanodes. The photoanodes with a thickness of approx. 300 nm were inkjet-printed on flexible polyethylene terephthalate (PET) foils. Plasma treatments of both DBDs led to changes in the chemical stoichiometry and morphology of the mesoporous photoanodes, resulting in a significant increase of the work function from approx. 4.0 to 4.3 eV and 4.8 eV, after plasma mineralization with volume DBD and coplanar DBD, respectively. We also studied the effect of plasma mineralization on the photoelectrochemical properties of the flexible mesoporous TiO 2 photoanodes. Plasma mineralization with volume DBD and coplanar DBD showed different effects on the generated photocurrent in the photoanodes. Although the plasma mineralization with volume DBD showed only a minor effect on the photocurrent, plasma mineralization with coplanar DBD led to significantly higher photocurrents. We found that the enhancement of the photoelectrochemical properties was related to the homogeneity of the plasma-treated surfaces-arising from different spatial properties of the plasma between volume and coplanar DBDs. Furthermore, the results showed that plasma mineralization using coplanar DBD can effectively change the energy levels of the surface. This resulted in the enhancement of the work function and the photoelectrochemical properties of the mesoporous TiO 2 photoanodes. This contribution shows that coplanar arrangement of electrodes in DBDs generates plasma of higher efficacy compared with standard volume DBD that is currently often used in industrial processes. KEYWORDSdielectric barrier discharge (DBD), homogeneity of the treated surface, low-temperature plasma, mesoporous photoanodes, plasma mineralization INTRODUCTIONTitanium nanoparticles (TiO 2 NPs) are among the most widely used semiconductors in various applications such as water splitting, [1] photocatalysis, and energy-conversion processes. [2][3][4] TiO 2 NPs are in use as photoanodes in dye-synthesized solar cells (DSSCs), [5] and recently porous and/or compact TiO 2 layers are utilized in perovskite solar cells (PSCs).[6] TiO 2 NPs have been deposited using a variety of techniques, including deposition from vapour and liquid phases. [7][8][9] As the deposited NPs possess a large absorbing area, the TiO 2 layer is often contaminated by the adventitious organic impurities from the ambient

show abstract

Optical characteristics of the filamentary and diffuse modes in surface dielectric barrier discharge

Cited by 10 publications

References 25 publications

The effect of atmospheric pressure glow discharge plasma treatment on the dyeing properties of silk fabric

The effect of atmospheric pressure glow discharge plasma treatment on the dyeing properties of silk fabric

Discharge Regimes Transition and Characteristics Evolution of Nanosecond Pulsed Dielectric Barrier Discharge

Mineralization of flexible mesoporous TiO₂ photoanodes using two low‐temperature dielectric barrier discharges in ambient air

Contact Info

Product

Resources

About

Optical characteristics of the filamentary and diffuse modes in surface dielectric barrier discharge

Cited by 10 publications

References 25 publications

The effect of atmospheric pressure glow discharge plasma treatment on the dyeing properties of silk fabric

The effect of atmospheric pressure glow discharge plasma treatment on the dyeing properties of silk fabric

Discharge Regimes Transition and Characteristics Evolution of Nanosecond Pulsed Dielectric Barrier Discharge

Mineralization of flexible mesoporous TiO2 photoanodes using two low‐temperature dielectric barrier discharges in ambient air

Contact Info

Product

Resources

About

Mineralization of flexible mesoporous TiO₂ photoanodes using two low‐temperature dielectric barrier discharges in ambient air