Structural properties and surface wettability of Cu-containing diamond-like carbon films prepared by a hybrid linear ion beam deposition technique

Guo, Peng; Sun, Lili; Li, Xiaowei; Xu, Sheng; Ke, Peiling; Wang, Aiying

doi:10.1016/j.tsf.2015.01.018

Cited by 31 publications

(8 citation statements)

References 24 publications

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“…Both samples could therefore be described as hydrophilic. When adding the a-C:H:Cu layer, even small, single-digit Cu contents increased the contact angle to over 90° and the surfaces showed increasingly hydrophobic character, which is consistent with the literature [63,76]. By adding more Cu to the a-C:H matrix, the surface became more and more hydrophobic, as shown by the higher contact angles of up to 107.5° ± 1.5°.…”

Section: Contact Anglesupporting

confidence: 89%

“…This relationship has already been described in the literature for Ag-and Cu-doped DLC layers and was measured independently of an applied substrate bias voltage in this work. An increase in the amount of Cu mole fraction mainly resulted in a reduction in the polar component of the surface energy [76,77]. This is explained by the increase in the sp 2 -hybridization of the a-C:H matrix by the Cu doping and formation of Cu-O bonds.…”

Section: Contact Anglementioning

confidence: 99%

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Surface Characterization and Copper Release of a-C:H:Cu Coatings for Medical Applications

et al. 2019

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This paper focuses on the surface properties of a-C:H:Cu composite coatings for medical devices and how the release of Cu2+ ions from such coatings can be controlled. The released Cu ions have the potential to act as a bactericidal agent and inhibit bacterial colonization. A PVD–PECVD hybrid process was used to deposit a-C:H:Cu composite coatings onto Ti6Al4V substrates. We examine the layer surface properties using atomic force microscopy and static contact angle measurements. An increasing surface roughness and increasing contact angle of Ringer’s solution was measured with increasing copper mole fraction (XCu) in the coatings. The contact angle decreased when a supplementary bias voltage of −50 V was used during the a-C:H:Cu deposition. These findings are in line with earlier published results regarding these types of coatings. The release of Cu2+ ions from a-C:H:Cu coatings in Ringer’s solution was measured by anodic stripping voltammetry. Different layer structures were examined to control the time-resolved Cu release. It was found that the Cu release depends on the overall XCu in the a-C:H:Cu coatings and that an additional a-C:H barrier layer on top of the a-C:H:Cu layer effectively delays the release of Cu ions.

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Section: Contact Anglesupporting

confidence: 89%

Section: Contact Anglementioning

confidence: 99%

Surface Characterization and Copper Release of a-C:H:Cu Coatings for Medical Applications

et al. 2019

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“…The Cu/C ratio varies from 3.6 to 9 by adjusting the power applied to the copper target from 25 to 100 W. Since we ensured the ability of the process to modify the chemical composition of the films, these four conditions were repeated at deposition temperatures of 400, 500 and 600 °C. one can conclude that all the films exhibit a globular morphology which is the typical characteristic of nc-Cu/C films grown by magnetron sputtering [18][19][20]. No significant…”

Section: Resultsmentioning

confidence: 70%

Effect of temperature on the synthesis of nanoporous carbon from copper/carbon thin films to nanoporous carbon for sensing applications

et al. 2017

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, et al.. Effect of temperature on the synthesis of nanoporous carbon from copper/carbon thin films to nanoporous carbon for sensing applications. Thin Solid Films, Elsevier, 2017Elsevier, , 630, pp.59-65. <10.1016Elsevier, /j.tsf.2016.014>. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT AbstractOver the last few years, a broad panel of carbon materials was proposed for sensing applications. Among these materials, nanoporous carbon (np-C) is of particular interest due to its high specific surface area and low fabrication cost. In this contribution, the synthesis of np-C thin films using an approach combining the growth of copper/carbon nanocomposite thin films by co-sputtering followed by a selective wet etching of copper in nitric acid is studied.By adjusting the deposition conditions (e.g., powers applied to the sputtering targets, deposition temperature) of the nanocomposite thin films, it is shown that the pore size and the structure of the carbon skeleton can be modified. Furthermore, the possibility of integrating such nanoporous materials in field effect transistors for sensing application is also demonstrated.

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“…Common synthesis methods for DLC films reported in the literature include: Radio Frequency (RF) Magnetron Sputtering Method [8], Chemical Vapor Deposition (CVD) [9], Physical Vapor Deposition (PVD) [10] and Ion-Beam [11]. Diamond-like carbon films have recently been reported to be prepared through the electrochemical deposition technique with organic solvents [1][2][3][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

The effects of deposition potential on the optical, morphological and mechanical properties of DLC films produced by electrochemical deposition technique at low voltages

Aslan

Başman

Uzun

et al. 2019

Materials Science-Poland

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Diamond-like carbon (DLC) films were electrochemically deposited onto indium tin oxide (ITO) substrates using acetic acid and deionized water as electrolyte at low deposition voltages (2.4 V and 60 V). The transmittance of the films was investigated by UV spectrometry. Transmittance measurements versus wavelength revealed that the films transmit 86 % to 89 % light in visible region and band gap of the films varies between 3.87 eV and 3.89 eV. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) were used for structural characterization to evaluate surface morphology of the DLC films. The grain size and the surface roughness increased for the films prepared at higher deposition potential, while their measured average height decreased. The mechanical properties (hardness H and elastic modulus Er) were determined from load-displacement curves which were obtained by using nanoindentation method. Hardness and elastic modulus of the films increased as the deposition voltage of the films increased from 2.4 V to 60 V.

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Structural properties and surface wettability of Cu-containing diamond-like carbon films prepared by a hybrid linear ion beam deposition technique

Cited by 31 publications

References 24 publications

Surface Characterization and Copper Release of a-C:H:Cu Coatings for Medical Applications

Surface Characterization and Copper Release of a-C:H:Cu Coatings for Medical Applications

Effect of temperature on the synthesis of nanoporous carbon from copper/carbon thin films to nanoporous carbon for sensing applications

The effects of deposition potential on the optical, morphological and mechanical properties of DLC films produced by electrochemical deposition technique at low voltages

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