Sample Holder (IMAGE) University of Vienna Caption A nylon fibre (light blue), deposited on the carbon carrier (grey), lifts up the crystal (red). This way, the crystal's side face becomes visible to the electron beam (blue). Without the fibre (right figure), the crystal lies flat on the carbon and the metal bar of the sample holder (marbled) occludes the signal. Credit © Tim Grüne Usage Restrictions The image may only be used with appropriate caption or 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.