Systematically Studying Slippery Surfaces (IMAGE) Kyushu University, I2CNER Caption Relationship between hydration state of zwitterionic poly(sulfobetaine) brushes and the charged group spacer length in the sulfobetaine units. Credit Institute for Materials Chemistry and Engineering / International Institute for Carbon-Neutral Energy Research, Kyushu University, Japan 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.