Abstract
Nanotechnology is an emerging scientific discipline with numerous applications in the field of biomedicine and manufacturing new materials. They hold potential to be applied in different biological fields and most strictly focused in medical applications, e.g., tools for noninvasive imaging, diagnostic test assays for early disease detection, drug development and targeted drug delivery systems to reduce secondary systemic negative effects. Nanoparticles have contributed a lot to the advancement of the medical arena. To extract gold nanoparticles with different techniques, green biosynthesis is under exploration due to its cost-effective, eco-friendly preparations with controllable shape, size and disparity, great physical and chemical inertness, optical properties related with surface plasmon resonance, surface modification, surface bio-conjugation with molecular probes, excellent biocompatibility and less toxicity. A significant potential of nanoparticles in biomedical applications including imaging of tissues and cells, sensing of target molecules, drug delivery is among recent efforts in their synthesis and functionalization e.g., Feridex (iron oxide nanoparticles) have been clinically administered as a contrast agent in MRI.
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