Array Reader (image) University of Illinois at Urbana-Champaign Caption The handheld reader analyzes the color changes in the sensor array to quickly monitor the environment for toxic chemicals. Credit Photo courtesy of Kenneth Suslick, University of Illinois. Usage Restrictions Photo may be used only with stories about the research described in the news release. Please credit: Photo courtesy of Kenneth Suslick, University of Illinois. 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.