Bragg diffraction, synchrotron x-ray reflectance, and x-ray photoelectron spectroscopy studies of low temperature plasma oxidation of native SiO[sub 2] on silicon on insulator

2008 ◽  
Vol 26 (1) ◽  
pp. 305 ◽  
Author(s):  
M. Bhargava ◽  
W. Donner ◽  
A. K. Srivastava ◽  
J. C. Wolfe
Keyword(s):  
Low Temperature ◽  
Photoelectron Spectroscopy ◽  
Bragg Diffraction ◽  
Silicon On Insulator ◽  
Plasma Oxidation ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
X Ray ◽  
Spectroscopy Studies

Effect of radical on defect and molecular structure of monolayer MoS2 by low temperature plasma treatment

2022 ◽  
Author(s):  
Shuya ASADA ◽  
Akihisa OGINO
Keyword(s):  
Molecular Structure ◽  
Low Temperature ◽  
Plasma Treatment ◽  
Photoelectron Spectroscopy ◽  
Microwave Plasma ◽  
Hydrogen Ions ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
X Ray ◽  
Ar Plasma

Abstract The aim of this study is to form the sulfur defects on monolayer molybdenum disulfide (MoS2) by low temperature microwave plasma treatment suppressing disturbance of molecular structure. CVD-grown and plasma treated multilayer MoS2 surface were analyzed to investigate the effects of H2 and Ar plasma treatment on sulfur defects and molecular structure. It was found that the disturbance of molecular structure was suppressed in the H2 plasma treatment compared to the Ar plasma treatment. Varying the incident ratio of hydrogen ions H+ and radicals H*, the influences of H2 plasma treatment with high and low H*/H+ ratio on monolayer MoS2 structure were discussed. As a result of X-ray photoelectron spectroscopy, Raman spectroscopy and photoluminescence analysis, sulfur defects increased with the increase in total amount of radical incident on MoS2. In addition, it is speculated that the etching with radical contributed to form sulfur defects suppressing the disturbance of molecular structure.

Effect of Low Temperature Plasma Treatment on Surface Properties of Polyphenylene Sulfide Fiber

2012 ◽  
Vol 557-559 ◽  
pp. 1668-1671 ◽  
Author(s):  
Jian Zhong Yang ◽  
Meng Zhao
Keyword(s):  
Low Temperature ◽  
Photoelectron Spectroscopy ◽  
Chemical Etching ◽  
Discharge Plasma ◽  
Breaking Strength ◽  
Polyphenylene Sulfide ◽  
Glow Discharge Plasma ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
X Ray

The performance of the polyphenylene sulfide fiber (PPS) was investigated by low temperature glow discharge plasma . The experimental results show that under the treatment of different plasma conditions, the PPS fiber surfaces appear the varying degree physics and chemical etching. It’s found that the friction coefficient and hydrophilicity of PPS fiber treated by low temperature plasma improve . X-ray photoelectron spectroscopy (XPS) analysis shows that the surface of PPS fiber produced etching, cross-linking, oxidation. Variations of tensile breaking strength of PPS with different parameters are analyzed.

Treatment of Wool Fabrics by Argon Atmospheric Pressure Low Temperature Plasma and its Dyeing

2012 ◽  
Vol 441 ◽  
pp. 49-53
Author(s):  
Hua Qing Wang ◽  
Mei Yang
Keyword(s):  
Low Temperature ◽  
Photoelectron Spectroscopy ◽  
Atmospheric Pressure ◽  
Fiber Surface ◽  
Wool Fabric ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
X Ray ◽  
Wool Fabrics ◽  
Wool Fibers

With the increase in the environmental protection consciousness of people, attention has focused on plasma technology because of its efficiency and environmentally friendliness. In order to improve the dyeing behavior of wool fabrics, surface modification of wool fabrics was carried out using an atmospheric pressure (argon) low temperature plasma treatment (LTP). Morphology and chemical composition analyses of the treated wool fiber surface were carried out by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The effect on the surface properties of wool fabrics treated for different times was evaluated. The results showed that the coloration of wool fabric is improved with an argon atmospheric pressure low temperature plasma (LTP) treatment but the fabric has a lower color fastness to washing and rubbing. This results from the formation of sulfonic groups and the increase in nitrogen content attributed to more severe etching and oxidization on the surface of wool fibers.

scholarly journals The surface modification by O2 low temperature plasma to improve dyeing properties of Rex rabbit fibers

2019 ◽  
Vol 14 ◽  
pp. 155892501985402
Author(s):  
Ting Su ◽  
Ying Han ◽  
Hongyan Liu ◽  
Lixin Li ◽  
Zongcai Zhang ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Low Temperature ◽  
Plasma Treatment ◽  
Photoelectron Spectroscopy ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
X Ray ◽  
Rex Rabbit

Dyeability of the fiber plays a very important role in the textile industry. The presence of cuticle scales on the surface of Rex rabbit fibers brings difficulties to dyeing process. In this study, O2 low temperature plasma was used to improve the dyeability of Rex rabbit fibers and the two key parameters including the treating time and discharge power were optimized during O2 low temperature plasma treatment. The impact of plasma treatment on the surface morphology, physical-chemical properties, and dyeing behavior of Rex rabbit fibers using anionic dyes were investigated by a series of characterization methods such as scanning electron microscopy, atomic force microscopy, Fourier transform infrared–attenuated total reflection, and X-ray photoelectron spectroscopy. The surface dyeability and color fastness were studied by K/S measurement and washing fastness, respectively. The influence of O2 low temperature plasma treatment on the mechanical properties of Rex rabbit fibers was inspected by the tensile strength measurement. The wettability of the samples was evaluated in terms of wetting time and contact angle. The O2 low temperature plasma treatment resulted in a dramatic improvement in wettability of Rex rabbit fibers. X-ray photoelectron spectroscopy and Fourier transform infrared–attenuated total reflection analysis show that oxygen plasma treatment led to a significant increase in the content of sulfur oxides and polar groups such as (–C=O, –OH, and –NH2) on the fiber surface and resulted in reinforced wettability, dyeing rate and dyeing fixation of Rex rabbit fibers.

Studies on the Surface of PTFE Membranes Treated with Atmospheric Pressure Low Temperature Plasma of Ar and Ar/H2

2014 ◽  
Vol 1048 ◽  
pp. 440-443
Author(s):  
Naohisa Akashi ◽  
Katsuhiko Hosoi ◽  
Shin-ichi Kuroda
Keyword(s):  
Low Temperature ◽  
Photoelectron Spectroscopy ◽  
Atmospheric Pressure ◽  
Spectroscopic Analysis ◽  
Attenuated Total Reflection ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
X Ray ◽  
Ft Ir ◽  
Ir Spectroscopic

Polytetrafluoroethylene (PTFE) has many excellent engineering applications for its great properties. We investigated the surface of the PTFE membranes treated with atmospheric pressure low temperature plasma in Ar and Ar/H2 to confirm the effectiveness for introducing functional groups as surface modifications. From the results of attenuated total reflection (ATR) Fourier transform infrared (FT-IR) spectroscopic analysis and X-ray photoelectron spectroscopy (XPS), it was found that the Ar/H2 plasma was more effective for proceeding defluorination reactions and introducing oxygen moieties compared to Ar plasma under the experimental condition. On the other hand, from the results of scanning electron microscopy (SEM), there were little differences in plasma-treated samples.

scholarly journals LOW TEMPERATURE PLASMA OXIDATION TREATMENT OF SEVERAL ORGANIC PIGMENTS

1986 ◽  
Vol 15 (5) ◽  
pp. 675-678 ◽  
Author(s):  
Tatuhiko Ihara ◽  
Seisirô Itô ◽  
Mitsuo Kiboku
Keyword(s):  
Low Temperature ◽  
Plasma Oxidation ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Oxidation Treatment ◽  
Organic Pigments

Characterizations of Ultra-thin Dielectrics Grown by Microwave Afterglow O2/N2O Plasma Oxidation at Low Temperature with Rapid Thermal Annealing

1995 ◽  
Vol 387 ◽  
Author(s):  
Po-ching Chen ◽  
Klaus Yung-jane Hsu ◽  
Joseph J. Loferski ◽  
Huey-liang Hwang
Keyword(s):  
Low Temperature ◽  
Thermal Annealing ◽  
Rapid Thermal Annealing ◽  
Photoelectron Spectroscopy ◽  
Interface State ◽  
State Density ◽  
Interface State Density ◽  
Plasma Oxidation ◽  
X Ray ◽  
Thin Dielectrics

AbstractMicrowave afterglow plasma oxidation at a low temperature (600 °C ) and rapid thermal annealing (RTA) were combined to grow high quality ultra-thin dielectrics. This new approach has a low thermal budget. The mid-gap interface state density of oxides pretreated in N2O plasma was decreased to about 5×1010 cm−2eV−1 after rapid thermal annealing at 950 °C.It was found that RTA is very effective for relieving the oxide stress and reducing the interface state density. Nitrogen incorporated in oxides by the N2O plasma pretreatment of the Si surface helped to reduce the interface state density. Microstructures of ultra-thin oxide grown by microwave afterglow oxidation with or without RTA were revealed by extended-X-ray-absorption-finestructure (EXAFS) and X-ray photoelectron spectroscopy (XPS) analysis.

Influence of the Combined Treatment of Causticization and Low Temperature Plasma on the Properties of Polyester Fiber

2011 ◽  
Vol 175-176 ◽  
pp. 312-317 ◽  
Author(s):  
Yu Ren ◽  
Jia Deng ◽  
Zhi Hong Li
Keyword(s):  
Low Temperature ◽  
Plasma Treatment ◽  
Photoelectron Spectroscopy ◽  
Combined Treatment ◽  
Polyester Fiber ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Dyeing Properties ◽  
Wetting Properties ◽  
Polyester Fibers

In this paper, the polyester fiber surfaces were modified with the combined method of causticization and low-temperature plasma. The effect of Alkali pre-treatment on plasma treatment was studied to investigate the influence of the combined treatment on the properties of the polyester fibers. Through changing the process parameters, such as the temperature of causticization and the plasma treatment duration, the changes of weight loss, mechanical properties, wetting properties and dyeing properties of the polyester fibers after the causticization-plasma treatment were analyzed. In addition, the change of the surface morphology and chemical composition of the polyester fibers after the treatment was investigated by scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS) analysis respectively. The results showed that the wetting and dyeing properties of the polyester fibers were improved in a higher degree after causticization-plasma treatment than the causticization and plasma treatment independently. Meanwhile, the wetting and dyeing properties were improved more significantly with the increase of the causticization temperature in the causticization-plasma treatment. It was concluded that the pretreatment of the causticization before the low temperature plasma treatment can accelerate the etching and oxidization towards the polyester surface during the plasma treatment.

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