6 papers
Metagrating-based Single-pixel Acoustic Direction Finding
Thomas Macleod, Sebastian Oberst, David A. Powell +1
Acoustic metamaterials provide new opportunities for compact and efficient wavefront manipulation, extending beyond conventional bulky and power-intensive phased-arrays. In this wo…
Analytical design of acoustic metasurface cells incorporating meander-line and Helmholtz resonators
Dingcheng Yang, Yan Kei Chiang, David Powell
Gradient acoustic metasurfaces have shown strong potential for manipulation of acoustic waves across the audible and ultrasonic frequency ranges. The key challenge in designing aco…
Reconfigurable Acoustic Metalens with Tailored Structural Equilibria
Dinh Hai Le, Felix Kronowetter, Yan Kei Chiang +3
The ability to concentrate sound energy with a tunable focal point is essential for a wide range of acoustic applications, offering precise control over the location and intensity…
Topological Supercavity Resonances In the Finite System
Lujun Huang, Bin Jia, Yan Kei Chiang +7
Acoustic resonant cavities play a vital role in modern acoustical systems. They have led to many essential applications for noise control, biomedical ultrasonics, and underwater co…
Sound Trapping in an Open Resonator
Lujun Huang, Yan Kei Chiang, Sibo Huang +7
The ability of extreme sound energy confinement with high-quality factor (Q-factor) resonance is of vital importance for acoustic devices requiring high intensity and hypersensitiv…
Acoustic meta-atom with maximum Willis coupling
Anton Melnikov, Li Quan, Sebastian Oberst +3
Acoustic metamaterials are structures with exotic acoustic properties, having promising applications in acoustic beam steering, focusing, impedance matching, absorption and isolati…