Example image of eyePlorer eyePlorer map for 'Racetrack memory': IBM IBM Almaden Research Center Non-volatile memory Stuart Parkin Disk storage Flash memory Memory storage density Universal memory Electric current Magnetic domains Permalloy Spin (physics) Bubble memory Twistor memory Dynamic random access memory Hard disk drive Static random access memory Electron Charge pump Wear levelling Ferroelectric RAM Magnetoresistive Random Access Memory Phase-change memory Resistive random-access memory University of Hamburg X-ray microscope Electromigration Giant magnetoresistance YouTube Spintronics Race track (disambiguation) April 2008 in science