There are certainly clothes and wires that can transmit electricity, but wouldnt it make sense if they could hold on to it as well? Researchers at the University of Central Florida certainly think so, since theyve just developed technology that lets wires and threads store energy. Their approach sheathes the wire in nano-sized whiskers that, when treated, become electrodes; the sheath effectively becomes a supercapacitor that preserves energy without hurting electrical transmissions.