Figure 1. Thermoelectric properties of carbon nanotube yarns (CNTYs) studied in the SmARTextiles Laboratory. The graph on the left shows the thermoelectric figure of merit quantifying the performance of the CNTYs and the figure on the right shows a transition from positive to negative type semiconducting behavior for the CNTYs. Credit: Kony Chatterjee, Ankit Negi, Kyunghoon Kim, Dr. Jun Liu, Dr. Tushar K. Ghosh