Germanium Sulfide Nanoflower (image) North Carolina State University Caption The GeS "nanoflowers" have petals only 20-30 nanometers thick, and provide a large surface area in a small amount of space. The structures hold promise for next-generation energy storage devices and solar cells. Credit Linyou Cao, North Carolina State University Usage Restrictions Image credit must be given 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.