A nanosensor is a biological, chemical, or surgical sensory point used to collect or transmit information about nanoparticles to the macroscopic world. Their use mainly include various medicinal purposes and as gateways to building other nanoproducts, such nanorobots and computer chips that work at the nanoscale. Currently, there are several ways proposed to make nanosensors, such as molecular self-assembly, top-down lithography, and bottom-up assembly.