图2 面向超宽带声波定向偏转的消色差超构表面 (IMAGE) Science China Press Caption a, 逆向设计的超构表面;b, 理论与优化的折射率;c, 单元的透射率;d, 4000 Hz的声波偏转;e, 模拟和测量的折射角 Credit ©《中国科学》杂志社 Usage Restrictions Use with credit. License Original 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.