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Diamond nanoparticles discovery and extensive applications in modern biosciences. Because of its excellent biocompatibility, it serves as useful platforms that can be implanted within polymer-based microfilm devices. Nano-diamonds complex with a chemotherapeutic show sustained release of the drug for a month, with a significant amount of drug in reserve. It serves the potential for highly localized drug release as a complementary and potent form of treatment with systemic injection towards the reduction of continuous dose, and as such, attenuation of the often-powerful side effects of chemotherapy. Nano-diamonds are very economical, allowing the wide impact of these devices for a range of physiological disorders like supporting as a local chemotherapeutic patch, or as a pericardial device to suppress inflammation after open heart surgery. Nano-diamond patch could be used to treat a localized region where residual cancer cells might remain after a tumour is removed. Nano-diamonds may be used to discover a wide range of therapeutic classes, including small molecules, proteins, therapeutic antibodies, RNAi.