M. Weiner, X. Ni, M. Li, A. Alù, and A. Khanikaev, “Demonstration of a Third-Order Hierarchy of Topological States in a Three-Dimensional Acoustic Metamaterial,” Science Advances, Vol. 6, No. 13, 4166 (2020).
M. Weiner, X. Ni, M. Li, A. Alù, and A. Khanikaev, “Demonstration of a Third-Order Hierarchy of Topological States in a Three-Dimensional Acoustic Metamaterial,” Science Advances, Vol. 6, No. 13, 4166 (2020).