The special issue “Metamaterials and Plasmonics in Asia” was developed from the fifth A3 Metamaterials Forum held in Nanjing, China, on 26–29 June 2021. The A3 Metamaterials (A3 META) Forum is an annual meeting for leading researchers working on metamaterials in three Asian countries (Korea, Japan and China). Topics of the forum include artificial materials and surfaces in electromagnetic, acoustic and other systems.
The first A3 Metamaterials Forum was launched in 2016 in Sendai, Japan, led by Prof. Jeong Weon Wu, Prof. Teruya Ishihara and Prof. Lei Zhou. The forum was then successfully held in Shanghai, China, in 2017; Pohang, Korea, in 2018; and Sapporo, Japan, in 2019. The fifth A3 Metamaterials Forum was originally scheduled to be held in Nanjing, China, in 2020, but was postponed to 2021 and held in a hybrid format due to the COVID-19 pandemic. Speakers from Japan, Korea and Hong Kong SAR, China, were invited to speak online.
Ten review articles in this special issue are presented by leading researchers on a variety of topics. Qin et al. overviewed the underlying physics of waveguide effective plasmonics in lower frequencies based on the structural dispersion, and their applications in novel effective plasmonic devices [1]. Otsuji et al. focused on the graphene-based plasmonic metamaterials for terahertz laser transistors [2]. Tian et al. introduced the recent advances in microwave metamaterials for simultaneous wireless information and power transmissions [3]. Deng et al. reviewed multi-freedom optical metasurfaces and their applications in vectorial holography [4]. Koala et al. overviewed the nanophotonics-inspired all-silicon waveguide platforms for terahertz integrated systems [5]. Du et al. introduced the latest research progress in multifunctional and tunable optical metasurfaces [6]. Lee et al. discussed the perspectives of broadband metasurfaces and the applications in photo-electric tweezers [7]. Park et al. reviewed the free-form optimisation of nanophotonic devices via classical methods and deep learning [8]. Ma et al. presented a comprehensive overview of the optical generation for strong-field terahertz radiation and its applications in nonlinear terahertz metasurfaces [9]. Han et al. discussed the recent progress in responsive photonic nanopixels with metallic and dielectric nanoscatters [10].
The issue also presents 31 original research papers. The research papers can be roughly categorised as follows, although there are certain inevitable overlaps between different categories:
Spoof surface plasmons at microwave frequencies [14]
Right/left-handed metamaterial lines [32]
Acoustic metamaterials [41]
Metamaterial research has been in the spotlight for several decades since the concept of negative refraction was firstly proposed by Veselago in 1968 [42] and fundamental theoretical and experimental research was performed by Sir John Pendry and David Smith in the late 1990s and early 2000s [43, 44]. Recently, metasurfaces [45, 46], plasmonic metamaterials [47, 48] and information metamaterials [49], [50], [51] have become hot topics and exhibited great application potential. From this special issue, we are glad to see endeavours ranging from optics to microwaves and electromagnetics to acoustics. There are some scientific breakthroughs in electromagnetic vortices and topological photonics that bring new ideas and possibilities to the field. Meanwhile, more engineering attempts emerge for applications, especially in the microwave community. Besides elaborately designed and applicable devices, some systematic prototypes have also been developed for wireless communications and sensing.
We sincerely appreciate all contributions from the authors to this special issue and believe that it provides an overview of recent efforts by leading scientists in the field of metamaterials in Asia.
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Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
References
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© 2022 Tie Jun Cui et al., published by De Gruyter, Berlin/Boston
This work is licensed under the Creative Commons Attribution 4.0 International License.
Artikel in diesem Heft
- Frontmatter
- Editorial
- Editorial on special issue: “Metamaterials and plasmonics in Asia”
- Reviews
- Waveguide effective plasmonics with structure dispersion
- Graphene-based plasmonic metamaterial for terahertz laser transistors
- Recent advances in metamaterials for simultaneous wireless information and power transmission
- Multi-freedom metasurface empowered vectorial holography
- Nanophotonics-inspired all-silicon waveguide platforms for terahertz integrated systems
- Optical metasurfaces towards multifunctionality and tunability
- The perspectives of broadband metasurfaces and photo-electric tweezer applications
- Free-form optimization of nanophotonic devices: from classical methods to deep learning
- Optical generation of strong-field terahertz radiation and its application in nonlinear terahertz metasurfaces
- Responsive photonic nanopixels with hybrid scatterers
- Research Articles
- Efficient modal analysis of plasmonic nanoparticles: from retardation to nonclassical regimes
- Molecular chirality detection using plasmonic and dielectric nanoparticles
- Vortex radiation from a single emitter in a chiral plasmonic nanocavity
- Reconfigurable Mach–Zehnder interferometer for dynamic modulations of spoof surface plasmon polaritons
- Manipulating guided wave radiation with integrated geometric metasurface
- Comparison of second harmonic generation from cross-polarized double-resonant metasurfaces on single crystals of Au
- Rotational varifocal moiré metalens made of single-crystal silicon meta-atoms for visible wavelengths
- Meta-lens light-sheet fluorescence microscopy for in vivo imaging
- All-metallic high-efficiency generalized Pancharatnam–Berry phase metasurface with chiral meta-atoms
- Drawing structured plasmonic field with on-chip metalens
- Negative refraction in twisted hyperbolic metasurfaces
- Anisotropic impedance surfaces activated by incident waveform
- Machine–learning-enabled metasurface for direction of arrival estimation
- Intelligent electromagnetic metasurface camera: system design and experimental results
- High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces
- Terahertz meta-chip switch based on C-ring coupling
- Resonance-enhanced spectral funneling in Fabry–Perot resonators with a temporal boundary mirror
- Dynamic inversion of planar-chiral response of terahertz metasurface based on critical transition of checkerboard structures
- Terahertz 3D bulk metamaterials with randomly dispersed split-ring resonators
- BST-silicon hybrid terahertz meta-modulator for dual-stimuli-triggered opposite transmission amplitude control
- Gate-tuned graphene meta-devices for dynamically controlling terahertz wavefronts
- Dual-band composite right/left-handed metamaterial lines with dynamically controllable nonreciprocal phase shift proportional to operating frequency
- Highly suppressed solar absorption in a daytime radiative cooler designed by genetic algorithm
- All-optical binary computation based on inverse design method
- Exciton-dielectric mode coupling in MoS2 nanoflakes visualized by cathodoluminescence
- Broadband wavelength tuning of electrically stretchable chiral photonic gel
- Spatio-spectral decomposition of complex eigenmodes in subwavelength nanostructures through transmission matrix analysis
- Scattering asymmetry and circular dichroism in coupled PT-symmetric chiral nanoparticles
- A large-scale single-mode array laser based on a topological edge mode
- Far-field optical imaging of topological edge states in zigzag plasmonic chains
- Omni-directional and broadband acoustic anti-reflection and universal acoustic impedance matching
Artikel in diesem Heft
- Frontmatter
- Editorial
- Editorial on special issue: “Metamaterials and plasmonics in Asia”
- Reviews
- Waveguide effective plasmonics with structure dispersion
- Graphene-based plasmonic metamaterial for terahertz laser transistors
- Recent advances in metamaterials for simultaneous wireless information and power transmission
- Multi-freedom metasurface empowered vectorial holography
- Nanophotonics-inspired all-silicon waveguide platforms for terahertz integrated systems
- Optical metasurfaces towards multifunctionality and tunability
- The perspectives of broadband metasurfaces and photo-electric tweezer applications
- Free-form optimization of nanophotonic devices: from classical methods to deep learning
- Optical generation of strong-field terahertz radiation and its application in nonlinear terahertz metasurfaces
- Responsive photonic nanopixels with hybrid scatterers
- Research Articles
- Efficient modal analysis of plasmonic nanoparticles: from retardation to nonclassical regimes
- Molecular chirality detection using plasmonic and dielectric nanoparticles
- Vortex radiation from a single emitter in a chiral plasmonic nanocavity
- Reconfigurable Mach–Zehnder interferometer for dynamic modulations of spoof surface plasmon polaritons
- Manipulating guided wave radiation with integrated geometric metasurface
- Comparison of second harmonic generation from cross-polarized double-resonant metasurfaces on single crystals of Au
- Rotational varifocal moiré metalens made of single-crystal silicon meta-atoms for visible wavelengths
- Meta-lens light-sheet fluorescence microscopy for in vivo imaging
- All-metallic high-efficiency generalized Pancharatnam–Berry phase metasurface with chiral meta-atoms
- Drawing structured plasmonic field with on-chip metalens
- Negative refraction in twisted hyperbolic metasurfaces
- Anisotropic impedance surfaces activated by incident waveform
- Machine–learning-enabled metasurface for direction of arrival estimation
- Intelligent electromagnetic metasurface camera: system design and experimental results
- High-efficiency generation of far-field spin-polarized wavefronts via designer surface wave metasurfaces
- Terahertz meta-chip switch based on C-ring coupling
- Resonance-enhanced spectral funneling in Fabry–Perot resonators with a temporal boundary mirror
- Dynamic inversion of planar-chiral response of terahertz metasurface based on critical transition of checkerboard structures
- Terahertz 3D bulk metamaterials with randomly dispersed split-ring resonators
- BST-silicon hybrid terahertz meta-modulator for dual-stimuli-triggered opposite transmission amplitude control
- Gate-tuned graphene meta-devices for dynamically controlling terahertz wavefronts
- Dual-band composite right/left-handed metamaterial lines with dynamically controllable nonreciprocal phase shift proportional to operating frequency
- Highly suppressed solar absorption in a daytime radiative cooler designed by genetic algorithm
- All-optical binary computation based on inverse design method
- Exciton-dielectric mode coupling in MoS2 nanoflakes visualized by cathodoluminescence
- Broadband wavelength tuning of electrically stretchable chiral photonic gel
- Spatio-spectral decomposition of complex eigenmodes in subwavelength nanostructures through transmission matrix analysis
- Scattering asymmetry and circular dichroism in coupled PT-symmetric chiral nanoparticles
- A large-scale single-mode array laser based on a topological edge mode
- Far-field optical imaging of topological edge states in zigzag plasmonic chains
- Omni-directional and broadband acoustic anti-reflection and universal acoustic impedance matching