Nanomachines are tiny devices built at the nanoscale, typically measuring between 1 to 100 nanometers. They can perform specific tasks, such as moving, sensing, or even carrying out chemical reactions. These machines are often made from materials like carbon, silicon, or DNA, and they have potential applications in fields like medicine, electronics, and environmental science. In medicine, nanomachines can be designed to target and destroy cancer cells or deliver drugs directly to affected areas, minimizing side effects. In electronics, they can enhance the performance of devices by improving data storage and processing. Overall, nanomachines represent a promising frontier in technology and science.