Device Structure and Imaging Matrix (IMAGE) University of Münster Caption The high sensitivity of the fabricated DPA-OPT (left) was proven by recording spatially resolved current maps using shadow masks (e.g. letter "C", right) Credit Macmillan Publishers Limited, part of Springer Nature 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.