A pulsating skyrmion (IMAGE) Brown University Caption A transducer senses small voltage fluctuations causes when skyrmions randomly fluctuate in size. That random voltage change can be converted into a string of random digits. Credit Xiao lab / Brown University Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.