Photograph of the STACK device (IMAGE) Toyohashi University of Technology (TUT) Caption A block module of a 3-μm-diameter and 400-μm-length needle-electrode (frontside block, 1 × 1 mm2) is stacked on an amplifier module (backside block) via a flexible interposer. Credit COPYRIGHT (C) TOYOHASHI UNIVERSITY OF TECHNOLOGY. ALL RIGHTS RESERVED. 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.