Judy Riffle, Virginia Tech (IMAGE) Virginia Tech Caption Judy S. Riffle is a professor of chemistry and director of Virginia Tech's Macromolecular Science and Engineering program. Credit Virginia Tech Photo Usage Restrictions With any announcement of Dr. Riffle having been named a PSME Fellow 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.