Spatial mapping of tissue stiffness (IMAGE) City University of Hong Kong Caption Schematic illustration of the mechanical actuators and sensors for quantitatively measuring the stiffness of biological surfaces. The lower-left inset shows the device is more or less the size of a US five-cent coin. And the other two pictures are the illustration of arrays of sensing device which support spatial mapping of tissue stiffness. Credit Song, E., Xie, Z., Bai, W. et al. / DOI number: 10.1038/s41551-021-00723-y Usage Restrictions Image must be used with appropriate caption and 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.