Single-walled carbon nanotubes (SWCNTs) are widely used in electronics due to their excellent electrical conductivity and mechanical strength. They are incorporated into transistors, sensors, and conductive films for flexible displays and touchscreens. In energy storage, SWCNTs enhance the performance of batteries and supercapacitors by improving electrode conductivity and capacity. They are also utilized in composite materials to create lightweight, high-strength products for aerospace, automotive, and sports equipment. In medicine, SWCNTs are explored for drug delivery systems, bioimaging, and cancer therapy due to their ability to penetrate cell membranes and carry therapeutic agents. Additionally, they are used in environmental applications, such as water filtration and gas sensors, for their high surface area and adsorption capabilities.