Schematic (IMAGE) University of Minnesota Caption This schematic illustrates how a tetragonal phase of Ru has been forced using ultra thin film growth methods. Credit University of Minnesota, Quarterman <i>et al, Nature Communications</i> Usage Restrictions with clear credit 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.