Earthworm Muscle Drives On-Chip Valve (image) RIKEN Share Print E-Mail Caption A valve on a 2 × 2 cm chip powered by earthworm muscle. (top) Design of the valve seen from above. A sheet of earthworm muscle covers a pushbar that sits above a microchannel. (bottom) Cross-sectional views through the microchannel when the valve is open (left) and closed (right). Still images of fluorescently labeled microparticles were taken from the video clip at the top of the article. Credit RIKEN Usage Restrictions credit RIKEN Share Print E-Mail 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.