MM2 (IMAGE) King Abdullah University of Science & Technology (KAUST) Caption The structure of graphene sensors for pH (top left), salinity (lower left) and temperature (right). Credit © 2020 Shaikh & Hussain Usage Restrictions please credit. 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.