Nanoparticles, as their name suggests, are microscopic particles with a dimension less than 100 nanometers (the equivalent of a thousand atoms). As you have seen, the field of nanotechnology is currently experiencing great expansion in scientific research due to its potential to be used in sectors such as medicine, electricity, cosmetics or optics, among other areas. The science that studies and works with nanoparticles is nanotechnology. Thanks to this new technology, researchers can work with and manipulate molecular structures and their atoms, managing to evolve in many aspects that will allow an improvement in the lives of many people. But like all science and technologies, they have different varieties and types used for different applications. Within the entire field of nanoparticles, there are four general types that are classified by the materials that compose it. Within the entire field of nanoparticles, there are four general types that are classified by the materials that compose it. The types include Carbon-based nanoparticles, Metal-based nanoparticles, Dendrimers, and Composites.