Photonic Crystal (IMAGE) National University of Science and Technology MISIS Caption This is an image of photonic crystal received with the help of the method of ptychography. Credit ©NUST MISIS 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.