Image 1 (IMAGE) Science China Press Caption (a) 制备流程示意图。(b)湿度刺激下,纸质模型可控变形示意图。 Credit ©《中国科学》杂志社 Usage Restrictions Use with 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.