Researchers with Pollution Sensor (IMAGE) Georgia Institute of Technology Research News Caption Oliver Brand, an associate professor in Georgia Tech's School of Electrical and Computer Engineering, and graduate student Jae Hyeong Seo look at a circuit board used to operate the microsensor chip. The monitor shows a photograph of the four disk-type microstructures combined on a single silicon chip. Credit Gary Meek 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.