Blue Peaks Electron Microneedles (IMAGE) University of North Carolina Health Care Caption This is a scanning electron microscopic (SEM) image of the microneedle-array patch developed in the lab of Zhen Gu, Ph.D. Credit Zhen Gu, NC State / UNC Usage Restrictions use caption 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.