Arunadevi N2023-08-072023-08-072022-02-15https://www.sciencedirect.com/science/article/abs/pii/S0167577X21020188Nano biosensors is a device with excellent sensing property having dimension in the range of 100 nm. Biosensors will recognize the biological molecules and have heterogeneous type of reaction with analyte. Biosensors are indispensable in medical field for metabolite measurement, monitoring diabetes and biomolecules due to its reproducibility and stability. Metal nanocomposite as biosensors have proven attention to biotechnologist due to its attractive properties. The properties include large surface area which will enhance immobilization of bio recognizers and receptor molecule, improved electro chemical properties and good biocompatibility. This review article covers the classification, characteristics and current development of biosensors with different nano composite materials.en-USArticle