Anomalous reflection focusing metasurface based on a dendritic structure

Sun, Guoli; Chen, Huan; Cheng, Suna; Zhao, Xiaopeng

doi:10.1016/j.physb.2017.08.084

Cited by 5 publications

(2 citation statements)

References 24 publications

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“…Theories and experiments have proven that a dendritic meta-molecule is actually a combination of a metal rod and split-ring resonator that can simultaneously achieve negative ε and negative μ in microwave and infrared [ 23 , 25 ], respectively. The paper [ 26 ] has demonstrated that a dendritic metasurface responding in infrared can be designed on the basis of dendritic metamaterial. Additionally, the simulated results of the paper indicate that the transmission of light conforms to the generalized Snell’s law and the metasurface can produce focusing phenomena in infrared.…”

Section: Anomalous Reflection and Refraction Of A Metasurface Withmentioning

confidence: 99%

“…We demonstrated that left-handed materials (LHMs) with unified dendritic unit cells arrayed in a disordered state exhibit negative refraction [ 25 ]. On the basis of gold dendritic metasurface, which achieved the focusing phenomenon in the mid-infrared frequency band [ 26 ], we designed a silver dendritic metasurface by adjusting the size of the structural units to achieve a plate-focusing effect in the visible light band by simulations and experiments. Numerical simulations confirmed the anomalous reflection and refraction effects over a wide waveband range.…”

Section: Introductionmentioning

confidence: 99%

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Plate-Focusing Based on a Meta-Molecule of Dendritic Structure in the Visible Frequency

Cheng

Chen

et al. 2018

Molecules

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To study the potential application of metasurfaces in lens technology, we propose a dendritic meta-molecule surface (also referred to as a dendritic metasurface) and realize the focusing effect in the visible spectrum through simulations and experiments. Using asymmetric dendritic structures, this metasurface can achieve distinct broadband anomalous reflection and refraction. When the metasurface is rotated by 180° around the z axis, anomalous reflection and refraction in vertically incident optical waves are in opposite directions. Considering this feature, a metasurface is designed to achieve a prominent plate-focusing effect. Samples with a transmission peak of green light at 555 nm, yellow light at 580 nm, and red light at 650 nm were prepared using bottom-up electrochemical deposition, and the focus intensity of approximately 10% and focal length of almost 600 µm were experimentally demonstrated.

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Section: Anomalous Reflection and Refraction Of A Metasurface Withmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Plate-Focusing Based on a Meta-Molecule of Dendritic Structure in the Visible Frequency

Cheng

Chen

et al. 2018

Molecules

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Diode behavior and nonreciprocal transmission in nonlinear elastic wave metamaterial

Yuan

Wang

et al. 2019

Mechanics of Materials

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Metamaterials and metasurfaces for designing metadevices: Perfect absorbers and microstrip patch antennas

Liu

Zhao

2018

Chinese Phys. B

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In the past twenty years, electromagnetic metamaterials represented by left-handed metamaterials (LHMs) have attracted considerable attention due to the unique properties such as negative refraction, perfect lens, and electromagnetic cloaks. In this paper, we present a comprehensive review of our group's work on metamaterials and metasurfaces. We present several types of LHMs and chiral metamaterials. As a two-dimensional equivalent of bulk three-dimensional metamaterials, metasurfaces have led to a myriad of devices due to the advantages of lower profile, lower losses, and simpler to fabricate than bulk three-dimensional metamaterials. We demonstrate the novel microwave metadevices based on metamaterials and metasurfaces: perfect absorbers and microwave patch antennas, including novel transmission line antennas, high gain resonant cavity antennas, wide scanning phased array antennas, and circularly polarized antennas.

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Anomalous reflection focusing metasurface based on a dendritic structure

Cited by 5 publications

References 24 publications

Plate-Focusing Based on a Meta-Molecule of Dendritic Structure in the Visible Frequency

Plate-Focusing Based on a Meta-Molecule of Dendritic Structure in the Visible Frequency

Diode behavior and nonreciprocal transmission in nonlinear elastic wave metamaterial

Metamaterials and metasurfaces for designing metadevices: Perfect absorbers and microstrip patch antennas

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