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Diamond-like Carbon Film Deposition on an Artificial Heart Blood Pump Using a Flexible Type Electrode with r.f. Plasma CVD Processing

Published online by Cambridge University Press:  01 February 2011

Kazuya Kanasugi ,
Yasuharu Ohgoe ,
Katsuya Tsuchimoto ,
Keisuke Sato ,
Kenji K. Hirakuri ,
Osamu Miyashita ,
Akio Funakubo  and
Yasuhiro Fukui
Kazuya Kanasugi
Affiliation:
Tokyo Denki University, Electronic and Computer Engineering, Ishizaka, Hatoyama, Saitama, 350-0394, Japan, +81-49-296-2911 ext. 3115, +81-49-296-6413
Yasuharu Ohgoe
Affiliation:
yas@f.dendai.ac.jp, Tokyo Denki University, Hatoyama, Saitama, 350-0394, Japan
Katsuya Tsuchimoto
Affiliation:
Aisin Cosmos R&D Co. Ltd., 5-50, Hachiken-cho,, Kariya, Aichi, 448-8650, Japan
Keisuke Sato
Affiliation:
Tokyo Denki University, Hatoyama, Saitama, 350-0394, Japan
Kenji K. Hirakuri
Affiliation:
Tokyo Denki University, Hatoyama, Saitama, 350-0394, Japan
Osamu Miyashita
Affiliation:
Tokyo Denki University, Hatoyama, Saitama, 350-0394, Japan
Akio Funakubo
Affiliation:
Tokyo Denki University, Hatoyama, Saitama, 350-0394, Japan
Yasuhiro Fukui
Affiliation:
Tokyo Denki University, Hatoyama, Saitama, 350-0394, Japan
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Abstract

Diamond-like carbon (DLC) film was deposited uniformly on an irregular structure such as a polyurethane artificial heart blood pump using a special 3-dimensional type electrode. Process of applying the DLC film coating is accomplished by inserting a large number of small metallic balls (φ0.8 mm chromium balls). It is then possible to adjust the shape of the electrode in such a way that the DLC film coating can be applied to the irregular surface of the artificial heart. In investigating the availability of the electrode, under helium (He) plasma, the plasma states were measured using double probe analysis. Lateral profiles of the electron temperature were higher in the centre and decreased towards the edges of the electrode. On the other hand, the plasma density profiles were lower in the centre part than at the edges. The electrode kept ion sheath on the artificial heart blood pump's surface at self-bias voltage uniformly. The results were that the DLC film was deposited completely on the artificial heart blood pump at the film thickness of approximately 350 - 380 nm. Additionally the film structure was uniform.

Keywords

chemical vapor deposition (CVD) (deposition)biomaterialthin film
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 956: Symposium J – Diamond Electronics—Fundamentals to Applications , 2006 , 0956-J09-25
Copyright
Copyright © Materials Research Society 2007

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References

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