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In recent years, nanoparticles have received a lot of interest. Chemical synthesis of nanoparticles ispossible. They exhibit molecular and submolecular behaviour. It has the potential to transform anumber of medical and biotechnology tools and processes, making them transportable, affordable,secure, and simple to use. What are nanoparticles used for? have been applied as a physical strategy tomodify and transform several types of particulate systems, including nanoparticles. Research onnanoparticles for medicine delivery aims to improve treatment outcomes while reducing negativeeffects. Here, we examine numerous characterisation, impact, and production aspects of nanoparticles.Many forms of metallic nanoparticles, including gold, silver, Magnets, alloys, etc. This study's goal isto provide an overview of nanoparticles. Nanoparticles are a class of materials with characteristicsthat set them apart from their molecular and bulk counterparts.