Highly uniform polycrystalline diamond coatings of three-dimensional structures

A Rifai; D Creedon; N Tran; M Hejazi; D Garrett; AD Greentree; E Pirogova; A Stacey; K Fox

Journal article

Highly uniform polycrystalline diamond coatings of three-dimensional structures

A Rifai, D Creedon, N Tran, M Hejazi, D Garrett, AD Greentree, E Pirogova, A Stacey, K Fox

Surface and Coatings Technology | ELSEVIER SCIENCE SA | Published : 2021

DOI: 10.1016/j.surfcoat.2020.126815

Abstract

Diamond is highly desirable as a conformal thin-film coating for three-dimensional (3D) devices due to its extreme hardness, durability and biocompatibility, especially in the case of implantable medical devices and prosthetics. Recent advances in microwave plasma chemical vapour deposition (CVD) have enabled conformal coating of such 3D structures with nanodiamond films. However, these techniques have not been extended to micro-crystalline diamond, due to interactions between the 3D substrates and resonant microwave cavity. Here we demonstrate more uniform growth of CVD polycrystalline diamond (PCD) coatings on complex-shaped structures, with the use of in-cavity Faraday cages, to isolate t..

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University of Melbourne Researchers

Daniel Creedon Author

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Funding Acknowledgements

The authors acknowledge the facilities and technical assistance of the RMIT Advanced Manufacturing Precinct. The authors wish to acknowledge the Australian Research Council (ARC) Centre for Nanoscale Biophotonics for sample preparation. This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). The authors would like to acknowledge that the equipment and facilities in the RMIT MicroNano Research Facility were made available for this research. The authors also appreciate the access granted to the facilities and the scientific and technical assistance of the Australian Microscopy & Microanalysis Research Facility at RMIT University. This work was supported by a CASS Foundation (Medicine and Science) Grant. K.F. is supported by the Clive and Vera Ramaciotti Foundation and the CASS Foundation (Medicine and Science). K.F. also acknowledges the ARC for funding (IC160100026). AS acknowledges the ARC for funding (DE190100336 and DP190102852). A.D.G. acknowledge the ARC for the funding (CE140100003 and FT160100357).