Detail of Metamaterial Structure (IMAGE) University of Missouri-Columbia Caption The metamaterial was fabricated in a single steel sheet with laser engravings creating chiral microstructures. It is the first metamaterial to be made of a single medium. Credit Guoliang Huang Usage Restrictions None 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.