A Microscope Caption of the Nano-Spring (IMAGE) Far Eastern Federal University Caption This is a microscope caption of the nano-spring with diameter 20 nanometers. Credit FEFU press office Usage Restrictions Credit: FEFU press office 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.