Dynamic Hybrid Metasurfaces
next-generation reprogrammable meta.
Biophysics
incident light
FOS: Physical sciences
all-dielectric nanoantennas
Applied Physics (physics.app-ph)
02 engineering and technology
specular beam deflection
modulation depth
metasurface platform
Genetics
GST
phase-change material Ge 2 Sb 2 Te 5
Molecular Biology
Cancer
tunable metasurfaces
plasmonic-photonic resonances
reduced-dimension meta-atom
Cell Biology
Physics - Applied Physics
plasmonic-photonic metasurfaces
Dynamic Hybrid Metasurfaces Efficient
postfabrication tunable
metal-dielectric meta-atoms
0210 nano-technology
Physical Sciences not elsewhere classified
Developmental Biology
Biological Sciences not elsewhere classified
Physics - Optics
Optics (physics.optics)
DOI:
10.1021/acs.nanolett.0c03625
Publication Date:
2021-01-23T03:40:03Z
AUTHORS (13)
ABSTRACT
Efficient hybrid plasmonic-photonic metasurfaces that simultaneously take advantage of the potential both pure metallic and all-dielectric nanoantennas are identified as an emerging technology in flat optics. Nevertheless, post-fabrication tunable still elusive. Here, we present a reconfigurable metasurface platform by incorporating phase-change material Ge$_{2}$Sb$_{2}$Te$_{5}$ (GST) into metal-dielectric meta-atoms for active non-volatile tuning properties light. We systematically design reduced-dimension meta-atom, which selectively controls fundamental resonances via dynamic change optical constants GST without compromising scattering efficiency. As proof-of-concept, experimentally demonstrate miniaturized control amplitude phase incident light necessary high-contrast switching anomalous to specular beam deflection, respectively. Finally, leverage deep learning-based approach intuitive low-dimensional visualization enhanced range response reconfiguration enabled addition GST. Our findings further substantiate dynamically promising candidates development small-footprint energy harvesting, imaging, signal processing devices.
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CITATIONS (116)
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