Haemocompatibility of DLC and TiC–TiN interlayers on titanium

Jones, Mark I.; McColl, I.R.; Grant, David M.; Parker, Katherine L.; Parker, Terry L.

doi:10.1016/s0925-9635(98)00426-9

Cited by 156 publications

(67 citation statements)

References 14 publications

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“…It is also generally recognized that hydrophilic surfaces are more likely to resist protein adsorption, and that hydrophobic surfaces usually will adsorb a monolayer of tightly adsorbed proteins [6]. However, the nature of body contact determines the biological response and hydrophilic coatings seem not to be favorable for blood interfacing applications [7], [8], [9]. In the presented work, coatings generally accepted as biocompatible materials i.e.…”

Section: A Biocompatible Coatingsmentioning

confidence: 97%

Biofouling on protective coatings for implantable MEMS

et al. 2010

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Abstract-Protective coatings can replace traditional packaging methods, which are often voluminous and may spoil the otherwise excellent opportunity for miniaturized implantable medical MEMS. The bio-growth on a selection of biocompatible protective coatings (TiO 2 , DLC and Parylene) was investigated. The model system for evaluation was a diaphragm based acoustic resonator primary designed for fish identification. By detecting the shift in resonance frequency, we wanted to highlight the following; i) does the amount of biological growth vary for the different coatings? ii) if biofouling occurs, is the growth devastating for the device characteristics? We found that the resonance frequency did not change significantly. From this we conclude that the stiffness, represented by the spring constant for the resonating structure, was not affected. This result is of major importance also for other diaphragm based in vivo devices to be, e.g. pressure sensors, ultrasonic imaging devices, and dosage pumps.

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Section: A Biocompatible Coatingsmentioning

confidence: 97%

Biofouling on protective coatings for implantable MEMS

et al. 2010

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“…The carbon films were deposited on steel substrate AISI 321(30x30x1 mm 3 ) by an ion-plasma installation «Yashma-5». The base pressure was 10 -3 Pa. Steel substrates were treated in plasma of ion source with closed electron drift prior to deposition.…”

Section: Magnetron Sputteringmentioning

confidence: 99%

“…Such films can be used in biomedicine in case of modification surface of medical implant or prostheses [1][2][3]. Moreover, carbon films have properties of ideal lubricant and prevent the formation of wear products by friction.…”

Section: Introductionmentioning

confidence: 99%

Antifriction coatings based on a-C for biomedicine applications

Yurjev

Kiseleva

Zaitcev

et al. 2016

J. Phys.: Conf. Ser.

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Protective antifriction multilayer nanostructured coating by ion-plasma sputtering A Urbahs, M Urbaha, K Savkovs et al. Abstract. This article reports on the investigation of mechanical properties of carbon films deposited by dual magnetron sputtering system with closed and mirror magnetic field. There is shown that a-C films with predominantly sp 2 -phase have relatively high hardness (up to 20 GPa) and low friction index (~0.01). The influence of magnetic field on friction index is determined. The analysis of experimental data shows the obtained a-C samples can be used for biomedicine applications. IntroductionInterest in increase of life-time of medical implants by improving wear resistance has been enhanced. The promising approach in this way is surface modification by deposition thin films. The most medical applications require good adhesion and reduction of friction index of operation surface to 0.1 and lower.Coatings based on a-C films have high mechanical and tribological properties, high wear resistance, biocompatibility and chemical inactivity. Such films can be used in biomedicine in case of modification surface of medical implant or prostheses [1][2][3]. Moreover, carbon films have properties of ideal lubricant and prevent the formation of wear products by friction. There are many ways to deposit such coatings with required mechanical properties: plasma assisted chemical vapor deposition

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“…Recently, DLC has been proposed for use in blood-containing devices such as rotary blood pumps, 7,8) mechanical heart valves [9][10][11] and coronary artery stents. 12) In order to improve the blood compatibility of NiTi alloys, DLC films were deposited on them by plasma immersion ion implantation and deposition (PIIID).…”

Section: Introductionmentioning

confidence: 99%

Surface Characterization and Blood Compatibility of Diamond-Like Carbon (DLC) Films on the NiTi Alloys

Sui¹,

Cai²,

Liu³

et al. 2006

Mater. Trans.

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Diamond-like carbon (DLC) films are fabricated on the NiTi alloys at room temperature using plasma immersion ion implantation and deposition (PIIID). The effects of the substrate bias on the characteristics of the DLC films are systematically examined to correlate to the blood compatibility. The results show both the I D =I G ratio (inverse trend in the sp 3 =sp 2 ratio) and the G peak position first decrease and then increase, while the nano-hardness first increases and then decreases with the increase of the substrate bias, and the blood compatibility of the coated sample is better than that of the uncoated sample and the DLC films on the NiTi alloys deposited at the substrate bias of 25 kV possesses better blood compatibility than the films deposited at other substrate bias. It can be concluded that the blood compatibility of the DLC films on the NiTi alloys is influenced by the sp 3 =sp 2 ratio.

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Haemocompatibility of DLC and TiC–TiN interlayers on titanium

Cited by 156 publications

References 14 publications

Biofouling on protective coatings for implantable MEMS

Biofouling on protective coatings for implantable MEMS

Antifriction coatings based on a-C for biomedicine applications

Surface Characterization and Blood Compatibility of Diamond-Like Carbon (DLC) Films on the NiTi Alloys

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