Rewritable Magnetic Charge Ice (IMAGE) Northern Illinois University Caption An image produced by mapping the magnetic force of magnetic charge ice. Scientists were able to "write" in the field through control of the local charge of the material. Credit Yong-Lei Wang and Zhili Xiao Usage Restrictions Please credit appropriately License Licensed 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.