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Reversal of transmission and reflection based on acoustic metagratings with integer parity design
Open accessAbstract
Phase gradient metagratings (PGMs) have provided unprecedented opportunities for wavefront manipulation. However, this approach suffers from fundamental limits on conversion efficiency; in some cases, higher order diffraction caused by the periodicity can be observed distinctly, while the working mechanism still is not fully understood, especially in refractive-type metagratings. Here we show, analytically and experimentally, a refractive-type metagrating which can enable anomalous reflection and refraction with almost unity efficiency over a wide incident range. A simple physical picture is presented to reveal the underlying diffraction mechanism. Interestingly, it is found that the anomalous transmission and reflection through higher order diffraction can be completely reversed by changing the integer parity of the PGM design, and such phenomenon is very robust. Two refractive acoustic metagratings are designed and fabricated based on this principle and the experimental results verify the theory.
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Cites
Flat optics with designer metasurfaces
Yu, N., & Capasso, F. (2014) · Nature Materials · doi:10.1038/nmat3839 · Cited by 5,984
Coding Metamaterials, Digital Metamaterials and Programmable Metamaterials
Cui, T. J., Qi, M. Q., Wan, X., Zhao, J., & Cheng, Q. (2014) · Light: Science & Applications · doi:10.1038/lsa.2014.99 · Cited by 3,801
From the generalized reflection law to the realization of perfect anomalous reflectors
Díaz-Rubio, A., Asadchy, V. S., Elsakka, A., & Tretyakov, S. A. (2017) · Science Advances · doi:10.1126/sciadv.1602714 · Cited by 513
Wave front engineering from an array of thin aperture antennas
Kang, M., Feng, T., Wang, H.-T., & Li, J. (2012) · Optics Express · doi:10.1364/oe.20.015882 · Cited by 355
Cited by
Acoustic Metamaterials: A Review of Theories, Structures, Fabrication Approaches, and Applications
Liao, G., Luan, C., Wang, Z., Liu, J., Yao, X., & Fu, J. (2021) · Advanced Materials Technologies · doi:10.1002/admt.202000787 · Cited by 267
Metadata
- Authors
- Fu, Y., Shen, C., Cao, Y., Gao, L., Chen, H., Chan, C. T., Cummer, S. A., & Xu, Y.
- Venue
- Nature Communications
- Published
- 2019-05-24
- Volume
- 10
- Issue
- 1
- Pages
- 2326-2326
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2946096626
- Cited by
- 226
- References
- 4
- FWCI
- 8.46
- Type
- journal article
- Language
- en
- Open access
- gold
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- Fu, Y., Shen, C., Cao, Y., Gao, L., Chen, H., Chan, C. T., Cummer, S. A., & Xu, Y. (2019). Reversal of transmission and reflection based on acoustic metagratings with integer parity design. Nature Communications. https://doi.org/10.1038/s41467-019-10377-9
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