Carbon nanotubes are tiny cylindrical structures made of carbon atoms arranged in a hexagonal pattern. They are incredibly strong and lightweight, making them useful in various applications, including electronics, materials science, and nanotechnology. Their unique properties arise from their structure, which can be single-walled or multi-walled. These nanotubes exhibit remarkable electrical and thermal conductivity, which makes them ideal for enhancing the performance of batteries and other electronic devices. Researchers are exploring their potential in fields like medicine, where they could be used for drug delivery or imaging, due to their ability to penetrate cells easily.