Alvin Modin (IMAGE) Johns Hopkins University Caption Alvin Modin with liquid crystal devices in the lab at the Krieger School of Arts and Sciences. Credit Will Kirk/Johns Hopkins University. Usage Restrictions none License Original 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.