Solid-State Nanopore (IMAGE) Technical University of Munich (TUM) Caption This transmission electron micrograph shows a solid-state nanopore: The white circle in the middle of the picture. The otherwise patchy-looking structure results from the polycrystalline nature of a gold film that was evaporated onto the silicon nitride membrane (which cannot be seen). Credit Rant group, TU Muenchen Copyright TU Muenchen Usage Restrictions This image may be freely used, with copyright noted, in news coverage of TU Muenchen. 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.