Rapid and Disposable Theophylline Sensor (IMAGE) Shibaura Institute of Technology Caption Researchers from SIT, Japan, have designed a low-cost sensor chip with graphite-based molecularly imprinted polymer as the electrode. This chip can be used for detecting and monitoring theophylline levels. Credit Yasuo Yoshimi from SIT, Japan Usage Restrictions Cannot be reused without permission 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.