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Published in 2022 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c01892
Abstract: A system of N two-level atoms cooperatively interacting with a photonic field can be described as a single giant atom coupled to the field with interaction strength ∝N. This enhancement, known as Dicke cooperativity in…
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Keywords:
ultrastrong coupling;
enhancement;
terahertz;
dicke cooperativity ... See more keywords
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Published in 2019 at "Nano letters"
DOI: 10.1021/acs.nanolett.8b04798
Abstract: The harmonic generation of light with plasmonic and all-dielectric nanostructures has gained much recent interest. This approach is especially promising for short wavelength (i.e., ultraviolet (UV)) generation, where conventional nonlinear crystals reach their limits both…
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Keywords:
third harmonic;
meta atoms;
harmonic generation;
generation ... See more keywords
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Published in 2022 at "Nanoscale"
DOI: 10.1039/d2nr03827g
Abstract: Super cells or multi-layer metasurfaces are used to realize various multi-functional and exotic functional devices. In such methods, the design space expands exponentially as more variable parameters are introduced; however, this will necessitate huge computational…
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Keywords:
multiple meta;
arbitrary jones;
meta;
design ... See more keywords
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Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5033937
Abstract: We explore the possibility of achieving superdirectivity in metamaterial-inspired endfire antenna arrays relying on the good services of magnetoinductive waves. These are short-wavelength slow waves propagating by virtue of coupling between resonant meta-atoms. Magnetoinductive waves…
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Keywords:
superdirectivity;
current distributions;
meta atoms;
magnetoinductive waves ... See more keywords
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Published in 2018 at "Applied Physics Letters"
DOI: 10.1063/1.5049696
Abstract: We propose an acoustic metasurface for perfect absorption at dual frequencies within a compact space. Meta-molecules of the metasurface contain four subwavelength meta-atoms whose cavities are coiled by three foldings. The meta-atoms comprising a meta-molecule…
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Keywords:
absorption;
perfect absorption;
space;
meta atoms ... See more keywords
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Published in 2018 at "Advances in Physics: X"
DOI: 10.1080/23746149.2018.1433551
Abstract: Abstract The concept of metamaterials has led to extraordinary schemes of wave propagation, which has been verified using various meta-atoms, constituent units of metamaterials, as well as applied to a number of categories in physics.…
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Keywords:
parameter identification;
meta atoms;
physics;
identification multiscales ... See more keywords
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Published in 2023 at "Physica Scripta"
DOI: 10.1088/1402-4896/acd4fc
Abstract: Benefiting from excellent properties in wavefront control, germanium antimony telluride (GeSbTe)-based photonic devices provide new opportunities for manipulating electromagnetic wave. In this paper, Ge3Sb2Te6 meta-atoms are presented to realize polarization switching for mid-infrared wave through…
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Keywords:
mid infrared;
ge3sb2te6 based;
ge3sb2te6;
control ... See more keywords
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Published in 2021 at "IEEE Communications Magazine"
DOI: 10.1109/mcom.001.2001161
Abstract: The upcoming high-speed wireless communication systems will be hosted by millimeter- and sub-millimeter-wave frequency bands. At these frequencies, electromagnetic waves suffer from severe propagation losses and non-line-of-sight scenarios. A new wireless communication paradigm has arrived…
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Keywords:
reconfigurable intelligent;
metamaterial based;
meta atoms;
meta ... See more keywords
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Published in 2022 at "IEEE Transactions on Vehicular Technology"
DOI: 10.1109/tvt.2023.3275987
Abstract: In this paper, we introduce the concept of partially-connected Receiving Reconfigurable Intelligent Surfaces (R-RISs), which refers to metasurfaces designed to efficiently sense electromagnetic waveforms impinging on them, and perform localization of the users emitting them.…
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Keywords:
partially connected;
localization;
localization single;
connected receiving ... See more keywords
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Published in 2022 at "Optics express"
DOI: 10.1364/oe.472280
Abstract: Since inverse design is an ill-conditioned problem of mapping from low dimensions to high dimensions, inverse design is challenging, especially for design problems with many degrees of freedom (DOFs). Traditional deep learning methods and optimization…
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Keywords:
design;
design meta;
meta atoms;
learning genetic ... See more keywords
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Published in 2018 at "Applied Sciences"
DOI: 10.3390/app8040555
Abstract: Metasurfaces offer great opportunities to control electromagnetic (EM) waves, attracting intensive attention in science and engineering communities. Recently, many efforts were devoted to multifunctional metasurfaces integrating different functionalities into single flat devices. In this article,…
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Keywords:
merging concept;
meta atoms;
meta;
metasurfaces based ... See more keywords