Journal
APPLIED PHYSICS LETTERS
Volume 114, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5083081
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Funding
- Nanjing University of Aeronautics and Astronautics
- National Natural Science Foundation of China [11604229]
- Natural Science Foundation of Jiangsu Province [BK20171206]
- China Postdoctoral Science Foundation [2018T110540]
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In this work, we propose and demonstrate a simple acoustic metagrating with binary phase modulation that can be employed to achieve multifunctional reflection with high efficiency, including three-channel retroreflection, quasi-retroreflection, and specular reflection. Although only two sub-elements are designed for the acoustic metagratings, the efficiency of multifunctional reflection is well preserved. By changing the desired retroreflection angle, the incident range of quasi-retroreflection and specular reflection can be effectively tuned. Our work provides an alternative way for planar acoustic devices with versatility and enables the development of acoustic metasurfaces with a simplified design. Published under license by AIP Publishing.
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