Nanocrystalline Diamond Coating of Cardiac Stimulation Electrodes For Improved Biocompatibility: A Structural And Electrochemical Investigation

Abstract

In the field of biomaterial science many new applications for medicine and biotechnology are achieved through interdisciplinary research. Different materials are used for these purposes. Diamond for instance is known for its superior mechanical and chemical properties but only recently also for its high degree of biocompatibility. Therefore it has become a popular candidate for incorporation in medical devices. This research investigates the applicability of diamond thin film coatings on cardiac stimulation electrodes. To proof this principle wires made of titanium, iridium, platinum/iridium and stainless steel are implemented as these are the materials used for modern day cardiac devices. Growth of nanocrystalline diamond films is accomplished using a. microwave plasma enhanced chemical vapour deposition procedure. Characterization of the thin films is done by Raman spectroscopy while morphology is investigated using scanning electron microscopy. Successfully coated wires of titanium,