Prototype in Precision (IMAGE) Tohoku University Caption This is a proximity capacitance image of a Japanese ten yen coin measured by repeating step and image capture on the surface. The detail of the surface pattern of the conductive copper material is clearly visualized. Credit Shigetoshi Sugawa, Tohoku University Usage Restrictions Credit: Shigetoshi Sugawa, Tohoku University 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.