Nanocrystalline Diamond Films As A Protective Coating For Implantable Bio- Devices

¹Plasma Thin Film Laboratory, Department of Physics, Birla Institute of Technology, Mesra 835215, Ranchi, India

²Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra 835215, Ranchi, India

³Division of Thin Film Technology, Faculty of Physics, University of Duisburg-Essen, 47048 Duisburg and CeNIDE, Germany

Adv. Mater. Lett., 2016, 7 (11), pp 903-909

DOI: 10.5185/amlett.2016.6050

Publication Date (Web): Oct 01, 2016

Copyright © IAAM-VBRI Press

E-mail:neelimarsharma@hotmail.com

Abstract

Nanocrystalline diamond (NCD) films are deposited on silicon substrates using Microwave Plasma Enhanced Chemical Vapor Deposition technique with the variation of microwave power from 800 W to 1800 W at 200 mbar for 5 hrs. Methane is used as a precursor along with argon and hydrogen as carriers for deposition. Deposited films are characterized by using Raman, FTIR, optical contact angle, AFM and SEM. The biocompatibility study has been carried out by cell viability assay, haemolysis test and simulated body fluid (SBF) adsorption assay. The Lymphocytes and Fibroblast cell lines are cultured on the NCD coated samples and cell viability has been determined by MTT assay. The surface morphology of the samples has been studied by using AFM, before and after interaction with SBF. It has been observed that NCD coated substrates are biocompatible, haemocompatible and also promote the growth of the cells, while the uncoated substrates cause cell death.

Keywords

Nanocrystalline diamond films, lymphocytes, fibroblast cell lines, simulated body fluid, haemocompatibility.