Researchers Use DNA to Build Tool (image) University of Montreal Caption Andrea Idili, Alexis Vallée-Bélisle and Francesco Ricci have developed a DNA-based nanosensor that allows to measure pH variation at the nanoscale. This nanosensor may significantly aid efforts to build nanodevices for cancer in-vivo imaging and targeted drug-delivery. This nanosensor measures less than 10 nm and unfolds at a specifically programmed pH. Credit Marco Tripodi Usage Restrictions Credit Marco Tripodi 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.