XPS structural characterization of hydrogenated amorphous carbon thin films prepared by shielded arc ion plating

Taki, Yusuke; Takai, Osamu

doi:10.1016/s0040-6090(98)00386-1

Cited by 119 publications

(55 citation statements)

References 8 publications

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“…The peaks at 284.6 eV and 285.4 eV are assigned to the C-C bond in sp 2 and sp 3 configuration. These observations are consistent with those reported elsewhere [21,22]. The sp 2 to sp 3 ratio of ta-C films can be determined from the relative intensities of the curve fitted XPS C 1s spectra.…”

Section: Resultssupporting

confidence: 92%

Ion Beam Induced Darkening in Tetrahedral Amorphous Carbon Thin Films

2015

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The samples of thin film (d ≈ 40 nm) tetrahedral amorphous carbon (ta-C), deposited by the filtered cathodic vacuum arc have been implanted with N + at a fluence of 3 × 10 14 cm −2 and ion energy E = 20 keV. The induced structural modification of the implanted material results in a considerable change of its optical properties, best manifested by a significant shift of the optical absorption edge to lower photon energies as obtained from optical transmission measurements. This shift is accompanied by a considerable increase of the absorption coefficient (photodarkening effect) in the measured wavelength range (350÷2500 nm). These effects could be attributed to both the additional defect introduction and the increased graphitization, as confirmed by the X-ray photoelectron spectroscopy measurements. The optical contrast thus obtained (between implanted and unimplanted film materials) could be made use of in the area of high-density optical data storage using the focused ion beams.

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Section: Resultssupporting

confidence: 92%

Ion Beam Induced Darkening in Tetrahedral Amorphous Carbon Thin Films

2015

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“…24 Other experimental works report the C sp 2 BE between 284.15 and 284.4 eV, the C sp 3 BE between 285.2 and 285.5 eV, whereas their BE separation values range from 0.8 to 1.35 eV. [1][2][3][4][5][6][7]25 The reason for these discrepancies is the semiconducting nature of diamond. The reported values of parameter D for diamond (100% of C sp 3 ) vary from 13.0 to 14.5 eV, depending on the type of facets and sp 2 contaminations.…”

Section: Discussionmentioning

confidence: 99%

Electron Spectra Line Shape Analysis of Highly Oriented Pyrolytic Graphite and Nanocrystalline Diamond

et al. 2010

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The X-ray excited Auger electron spectroscopy (XAES), X-ray photoelectron spectroscopy (XPS) and elastic peak electron spectroscopy (EPES) methods were applied in investigating samples of nanocrystalline diamond and highly oriented pyrolytic graphite of various C sp 2 /sp 3 ratios, crystallinity conditions and grain sizes. The composition at the surface was estimated from the XPS. The C sp 2 /sp 3 ratio was evaluated from the width of the XAES first derivative C KLL spectra and from fitting of XPS C 1s spectra into components. The pattern recognition (PR) method applied for analyzing the spectra line shapes exhibited high accuracy in distinguishing different carbon materials. The PR method was found to be a potentially useful approach for identification, especially important for technological applications in fields of materials engineering and for controlling the chemical reaction products during synthesis.

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“…3. Refer to XPS spectra of graphite and diamond 8) , the bond energy of graphite C1s was 284.1 eV, the shape of the peak was asymmetrical, while the bond energy of diamond C1s was 285.5 eV, the shape of the peak was symmetrical. From the peak of C1s in Fig.…”

Section: Xpsmentioning

confidence: 99%

Characteristics of Nanocrystalline Diamond Films on Titanium Surface and its Impact on the Proliferation and Adhesion of Cells

Liu

Luo

et al. 2016

J. Hard Tissue Biology.

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Nanocrystalline diamond has extensive application in biology modified material aspects of human implants, because it has good mechanical properties such as corrosion resistance and biocompatibility. This study investigated the surface characteristics and biocompatibility of pure titanium whose surface was modified with nanocrystalline diamond by Microwave Plasma Chemical Vapor Deposition. Scanning electron microscope (SEM), Spectruman analysis ray diffraction and X-Ray photoelectron spectroscopy were used to analyze the chemical composition and surface topography of nanocrystalline diamond. We found that the particle size of the diamond on the titanium disc is nanocrystalline, and is without impure elements. In the experiment, we used Human Osteoblast-like cells MG63 to investigate the bioactivity of nanocrystalline diamond film. The attachment and proliferation of the cells were tested by NAPI, CCK-8. The result showed that oxygen terminated NCD groups had a significant advantage compared with hydrogen terminated and titanium groups on attachment and proliferation of MG63.

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XPS structural characterization of hydrogenated amorphous carbon thin films prepared by shielded arc ion plating

Cited by 119 publications

References 8 publications

Ion Beam Induced Darkening in Tetrahedral Amorphous Carbon Thin Films

Ion Beam Induced Darkening in Tetrahedral Amorphous Carbon Thin Films

Electron Spectra Line Shape Analysis of Highly Oriented Pyrolytic Graphite and Nanocrystalline Diamond

Characteristics of Nanocrystalline Diamond Films on Titanium Surface and its Impact on the Proliferation and Adhesion of Cells

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