Block W Imaged by Metalenses (IMAGE) University of Washington Caption A block letter W imaged by three different prototype metalenses (A, B and C) using different mathematical models -- both without (left) and with (right) computational postprocessing. Credit Liu et al., <em>Nano Letters</em>, 2018 Usage Restrictions Must include 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.