Plasma diagnostics for pulsed-dc plasma-polymerizing para-xylene using QMS and OES

Chou, Chia-Man; Chuang, Chih-Cheng; Lin, Charles; Chung, Chi-Jen; He, Ju-Liang

doi:10.1016/j.surfcoat.2011.04.074

Cited by 10 publications

(3 citation statements)

References 29 publications

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“…Although changes in stalk length occurred during the squaring period and the pileus formation period, data collection on stalk length mainly occurred during the pileus formation period. Likewise, data collection on the pileus area mainly occurred during the spore opening period although changes in pileus area happened during the pileus formation and opening periods [37]. The recording methods were to capture photos of G. lucidum and to calculate the parameters.…”

Section: Growth Status Recording and Statistical Methodsmentioning

confidence: 99%

Investigation of stimulated growth effect using pulsed cold atmospheric plasma treatment on Ganoderma lucidum

Huang²,

Xiong³

2022

Plasma Sci. Technol.

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Cold atmospheric plasma (CAP) driven by pulsed high-voltage power has specific advantages in various fields, such as the growth promotion of edible fungi in plasma agriculture. Compared with other strains, Ganoderma lucidum has the significant advantage of high medicinal value, but the shortcomings of low yield, long growth cycle, and an uneven market quality. In this study, Ganoderma lucidum was treated with a CAP powered by a homemade pulsed high-voltage power supply. Three groups of Ganoderma lucidum were treated under different conditions. The stalk lengths and pileus areas of Ganoderma lucidum were recorded to evaluate growth status. Results showed that treatment frequency affected growth status considerably. Ganoderma lucidum was treated with 40 s plasma once a week and showed improved growth status with a 33.63% increase in average stalk length and a 28% increase in the number of individuals whose pileus areas was greater than the average. Meanwhile, the growth speed was accelerated. However, treatment at an excessive frequency would damage and slow down the growth of Ganoderma lucidum.

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Section: Growth Status Recording and Statistical Methodsmentioning

confidence: 99%

Investigation of stimulated growth effect using pulsed cold atmospheric plasma treatment on Ganoderma lucidum

Huang²,

Xiong³

2022

Plasma Sci. Technol.

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“…For untreated samples, several characteristic peaks are attributed to the imide structure, such as carbonyl group of imide ring at 1770-1780 cm −1 and 1710-1720 cm −1 , and characteristic absorption for C-N vibration at 1360-1375 cm −1 and 720-730 cm −1 [28] . A narrow and sharp peak around 1500 cm −1 attributes to the benzene ring and it is difficult to be dissociated when subjected to bombing in plasma [35] . Another broad and strong band is located at 1220 cm −1 and 1080 cm −1 , accounting for C−O.…”

Section: Chemical Compositionmentioning

confidence: 99%

“…Hence quantitative analysis of C=O, C−O and C−N are carried out here at different plasma treat durations. Relative absorption peak areas are calculated while the absorption band for benzene is chosen as the intensity calibration since a benzene ring is assumed to be a stable chemical structure and the bands would not be broken in plasma [35] . Each data is equaled from 5 samples, and the results are shown in Fig.…”

Section: Chemical Compositionmentioning

confidence: 99%

Surface Modification of Polyimide Film by Dielectric Barrier Discharge at Atmospheric Pressure

Shi

Wang

et al. 2016

Plasma Sci. Technol.

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In this paper, polyimide (PI) films are modified using an atmospheric pressure plasma generated by a dielectric barrier discharge (DBD) in argon. Surface performance of PI film and its dependence on exposure time from 0 s to 300 s are investigated by dynamic water contact angle (WCA), field emission scanning electron microscopy (FESEM), and Fourier transform infrared spectroscopy in attenuated total multiple reflection mode (FTIR-ATR). The study demonstrates that dynamic WCA exhibits a minimum with 40 s plasma treatment, and evenly distributed nano-dots and shadow concaves appeared for 40 s and 12 s Ar plasma treatment individually. A short period of plasma modification can contribute to the scission of the imide ring and the introduction of C−O and C=O (−COOH) by detailed analysis of FTIR-ATR.

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Plasma diagnostic and microstructural study of WCN coatings growth by pulsed vacuum arc discharge

Escobar

Ospina

Quintero

et al. 2018

Contributions to Plasma Physics

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In this work, we present a study of the plasma evolution during tungsten carbon nitride (WCN) coatings production using the repetitive pulsed arc technique. For the coatings production, a tungsten carbide (WC) target, and a mixture of argon and nitrogen as the filled gas were used. The study was carried out for discharges generated with one, two, three, and four pulses. The WCN coatings were characterized by X-ray diffraction (XRD) to identify the phases present in this material. The plasma was experimentally studied by optical emission spectroscopy (OES). A correlation was found between the spectral lines behavior and the material composition evolution. As the number of pulses increased, the intensity of the spectral lines also increased, especially in the case of the atomic lines of nitrogen, NI. The results were analysed to obtain information regarding the reactions in the plasma, as well as the electron temperature and density.

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Plasma diagnostics for pulsed-dc plasma-polymerizing para-xylene using QMS and OES

Cited by 10 publications

References 29 publications

Investigation of stimulated growth effect using pulsed cold atmospheric plasma treatment on Ganoderma lucidum

Investigation of stimulated growth effect using pulsed cold atmospheric plasma treatment on Ganoderma lucidum

Surface Modification of Polyimide Film by Dielectric Barrier Discharge at Atmospheric Pressure

Plasma diagnostic and microstructural study of WCN coatings growth by pulsed vacuum arc discharge

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