Scanning Electronic Microscopy (image) Georgia State University Share Print E-Mail Caption Scanning electronic microscopy (SEM) of cross-sectional of nanoparticles encapsulated into hydrogel (alginate-chitosan). Hydrogel in blue; Nanoparticles (NPs). Credit Georgia State University Usage Restrictions None Share Print E-Mail 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.