supported by the National Natural Science Foundation of China(Nos.12372019,12072222,12132010,12021002,and 11991032);the Open Projects of State Key Laboratory for Strength and Structural Integrity of China(No.ASSIKFJJ202303002);the State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures of China(No.SKLTESKF1901);the Aeronautical Science Foundation of China(No.ASFC-201915048001)。
A novel hollow star-shaped chiral metamaterial(SCM)is proposed by incorporating chiral structural properties into the standard hollow star-shaped metamaterial,exhibiting a wide band gap over 1500 Hz.To broaden the ban...