双层与单层声子晶体的实验示意图 (IMAGE) Science China Press Caption 在“反Klein隧穿”中,声波如撞墙般被完全反射;而在“Klein隧穿”中,声波可毫无阻碍地穿越势垒,仿佛“看不见”的墙体。 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.