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physics.app-ph2021
Scalable Metagrating for Efficient Ultrasonic Focusing
Yan Kei Chiang, Li Quan, Yugui Peng +4
Acoustic focusing plays a pivotal role in a wide variety of applications ranging from medical science to nondestructive testing. Previous works have shown that acoustic metagrating…
physics.app-ph2018
Non-Reciprocal Willis Coupling in Zero-Index Moving Media
Li Quan, Dimitrios L. Sounas, Andrea Alu
Mechanical motion can break the symmetry in which sound travels in a medium, but significant non-reciprocity is typically achieved only for very large motion speeds. Here we combin…