Conductivity (IMAGE) Osaka University Caption Conductivities of lithium (Li+, red), sodium (Na+, green), and potassium (K+, blue) ions inside the crystal at different temperatures. The conductivities increase even as the sizes of the ions increase. Credit Osaka University 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.