基于消色差超构表面的超宽带超声悬浮 (VIDEO) Science China Press This video is under embargo. Please login to access this video. Caption a, 40 kHz的超声微粒悬浮;b, 32 kHz的超声微粒悬浮 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.