Arun Bhunia and Padmapriya Banada (IMAGE) Purdue University Caption Arun Bhunia (standing) and Padmapriya Banada use a laser and a computer monitor to observe scatter patterns in a petri dish in their Purdue University lab. The technique may provide cost-cutting applications for medicine, food processing and homeland security. Bhunia is a professor of food microbiology, and Banada is a postdoctoral researcher. Credit Purdue University photo/Tom Campbell Usage Restrictions None 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.