Diagram of the Smartphone Virus Scanner (IMAGE) University of Tokyo Caption The virus-containing cavities are 4.5 micrometers across and 9 micrometers apart. Credit © 2019 Minagawa et al. Usage Restrictions © 2019 Minagawa et al. 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.