Micro-Raman, SEM, XPS, and electron field emission characterizations of nitrogen-induced shallow defects on nanodiamond films fabricated with different growth parameters

LeQuan, X.C.; Kang, W.P.; Davidson, J.L.; Guo, Meng; Choi, B.K.

doi:10.1016/j.diamond.2008.12.003

Cited by 14 publications

(7 citation statements)

References 10 publications

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“…11 At the same time, the former research studies have already demonstrated that carbon nitride films also have good field emission properties. 35,36 2D g-C 3 N 4 nanosheets are quite similar to graphene, so the field emission of 2D g-C 3 N 4 nanosheets is worthy of expectation. In this communication, based on the ultra-rapid synthesis of 2D g-C 3 N 4 nanosheets via direct microwave heating, the field emission properties of the products were also investigated.…”

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confidence: 99%

“…Usually, the turn-on field is defined as the electric field required to produce a current density of 10 mA cm À2 . The turn-on field of graphene is 5.2 V mm À1 11 and that of the CNx film and carbon nanotubes (CNTs) is 3.3-8.18 35 and 6.51 V mm À1 , 37 respectively. In our work, it is worth noting that the turning point appears at approximately 0.5 V mm À1 , with the electric current of 0.5 mA cm À2 .…”

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confidence: 99%

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The ultra-rapid synthesis of 2D graphitic carbon nitride nanosheets via direct microwave heating for field emission

Zhou

Wang

2016

Chem. Commun.

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confidence: 99%

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confidence: 99%

The ultra-rapid synthesis of 2D graphitic carbon nitride nanosheets via direct microwave heating for field emission

Zhou

Wang

2016

Chem. Commun.

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“…However, XPS is used for quantitative analysis. XPS is used to excite a solid surface with a beam of X-rays while measuring the kinetic energy emitted from the surface of the material being analyzed at 1–10 nm to obtain an XPS spectrum [23]. Electrons exceeding a certain kinetic energy are recorded by photoelectron spectroscopy.…”

Section: Resultsmentioning

confidence: 99%

Tribological Performance of Nanocomposite Carbon Lubricant Additive

et al. 2019

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In this research, nanocomposite carbon has been found to have excellent tribological properties as a lubricant additive. To reduce high friction and wear in friction pairs, the modified nanocomposite carbon has been prepared for chemical technology. The morphology and microstructure of the modified nanocomposite carbon were investigated via TEM, SEM, EDS, XPS, and Raman. In this study, varying concentrations (1, 3, and 5 wt. %) within the modified nanocomposite carbon were dispersed at 350 SN lubricant for base oil. The suspension stability of lubricating oils with the modified nanocomposite carbon was determined by ultraviolet-visible light (UV-VIS) spectrophotometry. The friction and wear characteristics of lubricants containing materials of the modified nanocomposite carbon were evaluated under reciprocating test conditions to simulate contact. The morphology and microstructure of the friction pair tribofilms produced during frictional contact were investigated via SEM, EDS, and a 3D surface profiler. The results showed that scratches, pits, grooves, and adhesive wear were significantly reduced on the surface of the friction pair which was used with 3% nanocomposite carbon lubricant. Additionally, the modified nanocomposite carbon showed excellent friction reducing and anti-wear performance, with great potential for the application of anti-wear.

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“…The Raman spectra are curve fitted using Gaussian shape. As shown in Fig.2, broad peak located around 1100cm -1~1 200cm -1 is attributed to nanocrystalline diamond [7,8], the graphite related D band and G band locate at 1350cm -1 and 1550-1580cm -1 , respectively. [9].…”

Section: Raman Spectroscopy Studiesmentioning

confidence: 99%

Investigation on the optical properties of sulfur-doped diamond thin films

et al. 2011

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Sulfur-doped diamond thin films have been synthesized using CH 4 /H 2 /Ar/H 2 S gas mixture by hot filament chemical vapor deposition (HFCVD) technique. The optical properties of the films are investigated by SEM and Raman spectra.The Gaussian line shape is used in the curve fitting for the Raman spectra. Results show that the I D /I G presents the trend of first increase and then decrease with the increase of S/C ratio, however, an upward shift of the diamond peak is observed. This implies residual stress in the sulfur-doped diamond thin films. Moreover, optimum experimental conditions are proposed.

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Micro-Raman, SEM, XPS, and electron field emission characterizations of nitrogen-induced shallow defects on nanodiamond films fabricated with different growth parameters

Cited by 14 publications

References 10 publications

The ultra-rapid synthesis of 2D graphitic carbon nitride nanosheets via direct microwave heating for field emission

The ultra-rapid synthesis of 2D graphitic carbon nitride nanosheets via direct microwave heating for field emission

Tribological Performance of Nanocomposite Carbon Lubricant Additive

Investigation on the optical properties of sulfur-doped diamond thin films

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