Original Research Published on 19 May 2022 Tri-Band Negative Modulus Acoustic Metamaterial With Nested Split Hollow Spheres in Metamaterials Limei HaoYujia LiXiaole YanXiao YangXueyi GuoYou XieShaofang PangZhi ChenWeiren Zhu Frontiers in Materials doi 10.3389/fmats.2022.909671 2,204 views 7 citations