Green Whirlpools Trapping Biomolecules (VIDEO) Duke University This video is under embargo. Please login to access this video. Caption Whirlpools efficiently trap cells, bacteria and other larger bioparticles to purify samples for biomedical tests. Credit Tony Jun Huang, Duke 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.