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Biocompatible Silver-containing a-C:H and a-C coatings: A Comparative Study

Published online by Cambridge University Press:  01 February 2011

Jose Luis Endrino ,
Matthew Allen ,
Ramon Escobar Galindo ,
Hanshen Zhang ,
Andre Anders  and
Jose Maria Albella
Jose Luis Endrino
Affiliation:
jlendrino@lbl.gov, Lawrence Berkeley National Laboratory, AFRD, 1 Cyclotron Rd. Building 53, Berkeley, CA, 94720, United States
Matthew Allen
Affiliation:
allenm@upstate.edu, SUNY Upstate Medical University, Syracuse, NY, 13210, United States
Ramon Escobar Galindo
Affiliation:
rescobar@icmm.csic.es, Instituto de Ciencia de Materiales de Madrid, Madrid, N/A, Spain
Hanshen Zhang
Affiliation:
hszhang@berkeley.edu, University of California at Berkeley, Berkeley, CA, 94720, United States
Andre Anders
Affiliation:
aanders@lbl.gov, Lawrence Berkeley National Laboratory, Plasma Applications Group, 1 Cyclotron Rd. Building 53, Berkeley, CA, 94720, United States
Jose Maria Albella
Affiliation:
jmalbella@icmm.csic.es, Instituto de Ciencia de Materiales de Madrid, Madrid, N/A, Spain
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Abstract

Hydrogenated diamond-like-carbon (a-C:H) and hydrogen-free amorphous carbon (a-C) coatings are known to be biocompatible and have good chemical inertness. For this reason, both of these materials are strong candidates to be used as a matrix that embeds metallic elements with antimicrobial effect. In this comparative study, we have incorporated silver into standard diamond-like carbon (DLC) coatings by plasma ion implantation and deposition (PIII&D) using methane (CH4) plasma and simultaneously depositing Ag from a pulsed cathodic arc source. In addition, we have grown amorphous carbon – silver composite coatings using a dual-cathode pulsed filtered cathodic-arc (FCA) source. The silver atomic content of the deposited samples was analyzed using glow discharge optical spectroscopy (GDOES). In both cases, the arc pulse frequency of the silver cathode was adjusted in order to obtain samples with approximately 5 at.% of Ag. Surface hardness of the deposited films was analyzed using the nanoindentation technique. Cell viability for both a-C:H/Ag and a-C:/Ag samples deposited on 24-well tissue culture plates has been evaluated.

Keywords

Cbiomedicalphysical vapor deposition (PVD)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 950: Symposium D – Biosurfaces and Biointerfaces , 2006 , 0950-D08-02
Copyright
Copyright © Materials Research Society 2007

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References

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