Depending on its state, it can be used for precise digital weight storage (training) and analog weight expression (inference). The new transistor can switch or amplify electric current by a factor of 10, a significant improvement over previously developed magnetic transistors. They were also able to control the magnetic states with an electric current, which would enable control over individual transistors. [2]Laser-powered on-chip gearResearchers from the University of Gothenburg and Chalmers University of Technology built light-powered gears on a micrometer scale for on-chip motors. (Credit: Gan Wang, University of Gothenburg)“We have built a gear train in which a light-driven gear sets the entire chain in motion.