An anonymous reader writes: A team of researchers is developing an innovative nanowire technology [http://newsoffice.mit.edu/2015/nanowire-supercapacitors-energy-boost-0707] for delivering short bursts of electrical power required by electronic wearable devices. Scientists at Massachusetts Institute of Technology (MIT) and the University of British Columbia explain that wearable devices such as fitness monitors and smartwatches are currently limited by insufficient power from their small batteries needed for data transmission. According to the researchers, supercapacitors can provide a solution to this issue, storing and releasing short bursts of power. The latest development uses yarns of niobium nanowire as the electrodes in a compact supercapacitor. The team discovered that although nanoparticles such as graphene and carbon are potential solutions, they are typically characterised by low electrical conductivity. Their current study has found that the niobium yarn could offer a new alternative, demonstrating the ability to store as much as five times more power in a given volume as carbon nanotubes.