Microfluidic device (IMAGE) Princeton University, Engineering School Caption The researchers coated this microfluidic device with see-through clay, then added fluorescently labeled sugar molecules and visualized the sorption and release of carbon from clay under a microscope. Credit Judy Q. Yang Usage Restrictions Noncommercial use only 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.