Microshutters (IMAGE) NASA/Goddard Space Flight Center Caption Using a microscope to look at a collection of Microshutters, called an "array" you can see a hair in the picture for a size comparison. Credit NASA/Chris Gunn 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.