Photonics Research, Volume. 11, Issue 7, 1293(2023)
Broadband omnidirectional visible spectral metamaterials
Fig. 1. Schematic and behavior of broadband omnidirectional meta-clusters system. (a) Negative refraction response of cluster system. (b) Structure of single cluster. (c) Cluster unit of broadband omnidirectional meta-clusters system (
Fig. 2. Simulated behavior of meta-cluster structure. (a)–(d) Meta-cluster model in blue-light, green-light, yellow-light, and red-light wavebands, respectively. The cluster is composed of a spherical core and 600 prominent rods; both the kernel and rods are made of
Fig. 3. Morphology and characterization of the
Fig. 4. Characterization of plane and 3D wedge-shaped broadband samples. (a) Plane SEM image and photograph image (the inset) of the broadband thin film sample and (b) corresponding side SEM image. (c) Microscope image of 3D wedge-shaped broadband sample and (d) corresponding SEM image, wedge angle
Fig. 5. Doppler effect measurement. (a) Schematic of the reference optical path when the sample moves. The size of wedge-shaped sample is
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Jing Zhao, Xianfeng Wu, Di Cao, Mingchao Zhou, Zhijie Shen, Xiaopeng Zhao. Broadband omnidirectional visible spectral metamaterials[J]. Photonics Research, 2023, 11(7): 1293
Category: Optical and Photonic Materials
Received: Dec. 1, 2022
Accepted: May. 7, 2023
Published Online: Jun. 25, 2023
The Author Email: Xiaopeng Zhao (xpzhao@nwpu.edu.cn)