Studies of diamond and diamond-like film surfaces using XAES, AFM and wetting

Ostrovskaya, L. Yu.

doi:10.1016/s0042-207x(02)00460-8

Cited by 57 publications

(29 citation statements)

References 21 publications

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“…Fabis has measured a value of 28 mJ/m 2 for the surface energy of polished hydrogen-terminated diamond (Ra ¼ 10 nm) [31]. Similarly, a surface energy consisting of polar and dispersion components, has been calculated to be 47 mJ/m 2 for the asgrown hydrogenated diamond surface, by Ostrovskayas group [32], in which the author has pointed out that the hydrogenation of diamond films essentially decreases the polar component of the surface energy. Comparatively, the surface energy of graphite depends greatly on the crystallographic orientations; a value of 110 mJ/m 2 for the (0001) basal plane, while for zig-zag structure of carbon atoms, it is 5000 mJ/m 2 [33].…”

Section: Surfactantsmentioning

confidence: 99%

Resistance to Surfactant and Protein Fouling Effects at Conducting Diamond Electrodes

et al. 2005

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Boron-doped diamond thin-film electrodes display negligible fouling effects in the presence of high levels of surfaceactive materials, including proteins. Dramatic improvements in the stability of the analyte response (compared to common glassy carbon and carbon paste electrodes) are illustrated using bovine serum albumin (BSA), gelatin, and Triton X-100 in connection with repetitive square-wave voltammetric (SWV) measurements. The voltammetric response of ascorbic acid at the diamond electrode exhibits negligible shifts in peak potentials and minimal depressions of current signals over a wide range of surfactant concentrations (0 -750 ppm). For example, the diamond electrode exhibited 70, 50 and 60 mV potential shifts for 10 repetitive voltammetric scans in the presence of 100 ppm BSA, gelatin and Triton X-100, respectively, compared to 120, 190, and 280 mV shifts observed at the glassy carbon electrode. Furthermore, only 4.3 and 6.2% of the initial current decays were observed in the presence of 100 ppm Triton X-100 and gelatin, respectively (compared to 45.2 and 34.4% diminutions at the glassy carbon electrode). Such improved performance was also confirmed from the SWV measurements of uric acid, dihydroxyphenylacetic acid, and catechol. The greatly improved resistance to surfactant interference reflects the fact that the as-grown diamond thin film, composed of oxide-free and hydrogen-terminated surface, has a relatively lower surface energy and minimal electrostatic attributes, either specific or general, so that little adsorption of surface-active agents occurs. The topographic AFM images of the diamond electrode surface confirm a negligible BSA fouling effect after repetitive SWV measurements. Such enhanced antifouling features make diamond electrodes very attractive for numerous reallife electroanalytical applications.

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Section: Surfactantsmentioning

confidence: 99%

Resistance to Surfactant and Protein Fouling Effects at Conducting Diamond Electrodes

et al. 2005

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“…It has been observed that the morphology varies with the variation of RF power. Formation of different surface morphologies like circular, granular, linear, and other structures have also been reported by many authors [21][22][23][24]. Formation of different structures depend on the process parameters like bias voltage, gas composition, type of power supply and power used.…”

Section: Resultsmentioning

confidence: 63%

“…The high internal stress limits the DLC films for various applications. Correlation of internal stress with sp 3 /sp 2 bonded carbon and various properties have been studied by many authors [21][22][23][24]. While the correlation between surface structures and sp 2 /sp 3 bonded carbon has not been investigated extensively.…”

Section: Related Workmentioning

confidence: 99%

Correlation of Mechanical Properties with Surface Morphology of Diamond-Like Carbon Films Deposited By Plasma Enhanced Chemical Vapour Deposition Technique

Mahant¹,

Sharma²,

Sharma³

et al. 2014

IJIRSET

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Diamond like carbon (DLC) films are deposited on glass substrates by using radio frequency plasma enhanced chemical vapour deposition technique with the variation of RF power. DLC films are deposited by using argon and acetylene plasma, at pressure 5×10-2 mbar for 60 minutes. Various properties like surface morphology, hydrophobicity, nanohardness, and structural properties are studied by using atomic force microscope, contact angle measurement setup, nano-hardness tester and Raman spectrometer, respectively. Systematic variation in surface morphology with RF power has been observed. It has been observed that the morphology of the films is correlated with the hardness, sp3 content, roughness, and contact angle. Observed results have been explained using Raman spectra.

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“…On the other hand, the hydrogen content decreases as the content of DLC increases. The hydrogen content is known to play a role in the wettability of the surface [33,34]. The wettability of CNT doped DLC is measured by a sessile drop and the results are shown in Fig.…”

Section: Surface Properties Of Cnt Doped Dlc Filmsmentioning

confidence: 99%

The effect of CNT content on the surface and mechanical properties of CNTs doped diamond like carbon films

Wei

Wang

Tai

et al. 2010

Diamond and Related Materials

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Studies of diamond and diamond-like film surfaces using XAES, AFM and wetting

Cited by 57 publications

References 21 publications

Resistance to Surfactant and Protein Fouling Effects at Conducting Diamond Electrodes

Resistance to Surfactant and Protein Fouling Effects at Conducting Diamond Electrodes

Correlation of Mechanical Properties with Surface Morphology of Diamond-Like Carbon Films Deposited By Plasma Enhanced Chemical Vapour Deposition Technique

The effect of CNT content on the surface and mechanical properties of CNTs doped diamond like carbon films

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