Nanoengineered granular hydrogel bioink (IMAGE) Penn State Caption Penn State researchers developed a new nanoengineered granular hydrogel bioink, used here to print an image of the Nittany Lion logo. This bioink helps to achieve previously unattained levels of porosity, shape fidelity and cell integration when 3D printing biomaterials. Credit Provided by Amir Sheikhi/Penn State Usage Restrictions No restrictions. License Public Domain 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.