Qi Wang, Brown University (IMAGE) Brown University Caption Qi Wang swirls a solution of selenium nanoparticles in the lab. Coatings of the nanoparticles appear effective in fighting staph bacteria in medical device materials, according to a new study. Credit Webster Lab/Brown University Usage Restrictions Credit required 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.