Artificial Spin Ice (image) Imperial College London Share Print E-Mail Caption 'Hexagonal artificial spin ice ground state' -- a pattern never demonstrated before. Colored arrows show north or south polarization. Credit Gartside et al/Imperial College London Usage Restrictions None Share Print E-Mail 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.