Fig.2 (IMAGE) Osaka University Caption Plots of the resonance frequency shift as a function of the mineral concentration in 85 picoliters of water. By observing the magnitude of the shift away from the resonance frequency of pure water, the solute can be detected with a sensitivity of 472 attomoles. Credit Kazunori Serita Usage Restrictions Credit must be given to the creator. 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.