A nanobot is a tiny robot designed to perform specific tasks at a nanoscale, typically measuring between 1 to 100 nanometers. These miniature machines are often made from materials like carbon or silicon and can be programmed to carry out functions such as drug delivery, environmental monitoring, or even repairing cells. Nanobots have significant potential in the field of medicine, where they can target and treat diseases at a cellular level. For example, they can be used to deliver chemotherapy directly to cancer cells, minimizing damage to healthy tissue. Their small size allows them to navigate through the body and perform tasks that larger robots cannot.