Nanostructurally designed ultra-hydrophilic hard ceramic oxide coatings for orthopaedic application

Fereydoon Namavar, Renat F. Sabirianov, Jiaming Zhang, Chin Li Cheung, Charles Blatchley, Raheleh Miralami, John G. Sharp, Kevin L. Garvin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

This paper addresses the application of engineered nanocrystalline ultrahydrophilic titanium oxide films to artificial orthopaedic implants. Titanium (Ti) is the material of choice for orthopaedic applications and has been used for over fifty years because of its known biocompatibility. Recently it was shown that biocompatibility of Ti metal is due to the presence of a thin native sub-stoichiometric titanium oxide layer [1] which enhances the adsorption of mediating proteins on the surface thus enhancing cell adhesion and growth [2,3,4]. Improving the quality of surface oxide, i.e. fabricating stoichiometric oxides as well as nanoengineering the surface topology that matches the dimensions of adhesive proteins, is crucial for the increase of protein adsorption [2] and, as a result, the biocompatibility of Ti implant materials. We have fabricated ultrahydrophilic nano-crystalline transparent films of anatase phase of titania (TiO2) by ion beam assisted deposition (IBAD) processes in an ultrahigh vacuum system. Source material was 99.9% pure rutile TiO2. Various ion beam conditions were used to produce these coatings with different grain sizes (4 to 70 nm) that affect the wettability, roughness, and the mechanical and optical properties of the coating [5]. Our biological experiments have shown that biocompatibility of these ultrahydrophilic nanoengineered TiO2 coatings are superior to commonly used orthopaedic titanium and even hydroxyapatite.

Original languageEnglish (US)
Title of host publicationTitanium Dioxide
Subtitle of host publicationFundamentals and Applications
PublisherMaterials Research Society
Pages23-28
Number of pages6
ISBN (Print)9781632661579
DOIs
StatePublished - 2013
Event2013 MRS Spring Meeting - San Francisco, CA, United States
Duration: Apr 1 2013Apr 5 2013

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1578
ISSN (Print)0272-9172

Other

Other2013 MRS Spring Meeting
CountryUnited States
CitySan Francisco, CA
Period4/1/134/5/13

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Namavar, F., Sabirianov, R. F., Zhang, J., Cheung, C. L., Blatchley, C., Miralami, R., Sharp, J. G., & Garvin, K. L. (2013). Nanostructurally designed ultra-hydrophilic hard ceramic oxide coatings for orthopaedic application. In Titanium Dioxide: Fundamentals and Applications (pp. 23-28). (Materials Research Society Symposium Proceedings; Vol. 1578). Materials Research Society. https://doi.org/10.1557/opl.2013.880