Single wall carbon nanotube solutions are widely used in advanced electronic and optoelectronic devices due to their exceptional electrical conductivity and semiconducting properties. They serve as active components in thin-film transistors, flexible electronics, and radio-frequency identification (RFID) tags. Their high aspect ratio and transparency make them ideal for transparent conductive films used in touch screens, displays, and solar cells. These solutions are also employed in sensors for detecting gases, biomolecules, and environmental changes, leveraging their sensitive electronic structure that responds to surface interactions. In composite materials, they enhance mechanical strength, thermal stability, and electrical conductivity when incorporated into polymers, coatings, or fibers. In the field of energy, single wall carbon nanotube solutions are used in battery electrodes and supercapacitors to improve charge storage and transport. Their large surface area and conductivity support efficient energy delivery. Additionally, they are explored in biomedical applications such as drug delivery systems, photothermal therapy, and bioimaging due to their ability to penetrate cell membranes and respond to near-infrared light.