耗散声学超材料中的高阶外尔奇异环 (IMAGE) Science China Press Caption IMAGE1: 晶格模型与外尔奇异环的形成:a, 棱柱结构下三维晶格的示意图,原胞中包含三个子晶格;b, 外尔点(左图)和外尔奇异环(右图)在布里渊区中的分布,其中由陈数表征的拓扑荷分别用紫色(+1)和青色(−1)标出。 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.