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Special issue: Metamaterials and plasmonics in Asia, a tribute to Byoungho Lee

  • Q-Han Park ORCID logo , Lei Zhou EMAIL logo , Teruya Ishihara ORCID logo and Jeong Weon Wu ORCID logo
Published/Copyright: June 22, 2023
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This special issue is a development of the 6th A3 Metamaterials Forum held from June 27 to 29, 2022, at Seoul National University, Korea. Namkyoo Park, from Seoul National University, served as the conference chair on behalf of Byoungho Lee due to his health issue at that time. Unfortunately, Byoungho Lee passed away on November 7, 2022, which was acknowledged by obituaries in the Nature Photonics journal [1] and the societies Optica [2] and SPIE [3]. His dedication to the A3 Metamaterials Forum (2016–2022) and the Korea-Japan Metamaterials Forum (2011–2015) contributed to maintaining the high quality of invited talks. Byoungho Lee himself was a top researcher in nanophotonics (plasmonics and metamaterials), holography, and 3D display. He left us with a legacy of relentless passion for scientific research and devoted leadership in professional societies such as the Optical Society of Korea, Optica, and SPIE. It is with deep respect that we dedicate this special issue to Byoungho Lee with a memorandum [4].

The capability to design and fabricate sub-wavelength artificial structures as inclusions has led to research on metamaterials with tailored effective-medium properties operating within a frequency range from microwave and terahertz to the visible spectral region, depending on the size of sub-wavelength inclusion. This special issue presents four review articles and 30 research articles.

The ease of implementing artificial gain and loss in optical processes renders nanophotonics a straightforward platform for exploring non-Hermitian physics in artificial optical structures. In addition, the concept of a topological insulator in condensed matter physics can be extended to optics platforms for a variety of advantages in optical device applications, the presence of a robust topological edge state being one prominent example. The advances and application of non-Hermitian topological photonics are elegantly presented in ref. [5], while ref. [6] covers the construction and manipulation of photonic topological states, and touches upon non-Hermitian topology. A metasurface is a two-dimensional metamaterial, where the Huygens wavefront of the outgoing wave is controlled by manipulating the amplitude, phase, and polarization of the incoming wave. This topic is extensively reviewed in ref. [7]. Additionally, ref. [8] reviews microscopic tools for super-resolution, fast volumetric imaging, and a large imaging field of view.

The emergence of exceptional points is characteristic of a non-Hermitian system, which can be extended to a photonic crystal structure with negative index media to realize a 2D symmetry-protected exceptional ring as shown in ref. [9].

Research articles on metasurfaces cover applications of angle-multiplexing in ref. [10], multilayer metalenses in ref. [11], high numerical aperture metalenses in ref. [12], anomalous diffraction in ref. [13], spatial filters in ref. [14], and bound-state-in-continuum based on nanohole array in ref. [15].

Active beam control is examined in schemes of deep-learning-assisted reconfigurable metasurface antenna in ref. [16], on-chip integration for optical phase array in ref. [17], and a digital and programmable metasurface in ref. [18].

An important feature of metamaterials is the versatility of energy-momentum dispersion engineering for broadband absorption, as well as epsilon-near-zero response. This is explored in a broadband absorber covering the entire microwave X-band in ref. [19], in cermet films with a nano-cone structure for a perfect absorber in ref. [20], in an all-dielectric broadband absorber in ref. [21], and in directive emission from highly-dispersive organics in ref. [22].

Nanoplasmonics is incorporated in various applications, such as the nanoimprint meta-device in ref. [23], the super-resolution localization microscope in ref. [24], the generation of a nano-vortex field associated with Laguerre-Gaussian beam in ref. [25], and plasmonic nanoantennas in ref. [26].

THz metamaterials and their applications are becoming increasingly important and are explored in various research articles. For instance, ultrafast time resolution nanoscale strong-field THz–matter interaction in ref. [27], wide reflection steering in the millimeter-wave and THz band in ref. [28], an isotropic metasurface suitable for planar optical components in 6G wireless communications in ref. [29], a THz optical nanofuse in ref. [30], and a THz metasurface wave retarder in ref. [31].

Polariton excitations, a coherent coupling of polarization and photons, are investigated in 2D structures for guided exciton-polariton in ref. [32] and polariton optics nanostructure-integrated low-dimensional devices in ref. [33]. Scattering is a key process in optics and exhibits characteristic features of nanophotonic structures. As such, a deep neural network is developed to facilitate the inverse design is detailed in ref. [34] and the semi-analytical method developed for engineering isospectrality in multi-dimensional photonic systems is explored in ref. [35].

Research articles exploring novel structured materials include an integration of active semiconductor into the conventional passive waveguide is demonstrated for chip-scale active nanophotonic platforms in ref. [36], hypersonic 3D phononic crystals designed and fabricated by DNA origami in ref. [37], and a jungle gym-shaped dielectric unit cell introduced for carpet cloaking with 3D anistropy control in ref. [38].

This special issue provides a comprehensive overview of research activities conducted by leading scientists in the field of metamaterials and plasmonics in Korea, Japan, and China. We hope that you will enjoy reading it.


Corresponding author: Lei Zhou, Fudan University, Shanghai, China, E-mail:

References

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[38] Y. Maegawa, Y. Nakata, and A. Sanada, “All-dielectric carpet cloaks with three- dimensional anisotropy control,” Nanophotonics, vol. 12, no. 13, pp. 2623–2636, 2023. https://doi.org/10.1515/nanoph-2022-0786.Search in Google Scholar PubMed PubMed Central

Published Online: 2023-06-22

© 2023 the author(s), published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 International License.

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Special issue: Metamaterials and plasmonics in Asia, a tribute to Byoungho Lee
  4. Memorandum
  5. In memory of Prof. Byoungho Lee
  6. Reviews
  7. Advances and applications on non-Hermitian topological photonics
  8. Topological phases and non-Hermitian topology in photonic artificial microstructures
  9. Recent advanced applications of metasurfaces in multi-dimensions
  10. Recent advances in oblique plane microscopy
  11. Research Articles
  12. A symmetry-protected exceptional ring in a photonic crystal with negative index media
  13. Highly angle-sensitive and efficient optical metasurfaces with broken mirror symmetry
  14. Multilayer all-polymer metasurface stacked on optical fiber via sequential micro-punching process
  15. Inverse design of high-NA metalens for maskless lithography
  16. Deterministic approach to design passive anomalous-diffraction metasurfaces with nearly 100% efficiency
  17. Metasurface spatial filters for multiple harmonic signals
  18. Multiple symmetry protected BIC lines in two dimensional synthetic parameter space
  19. Deep-learning-assisted reconfigurable metasurface antenna for real-time holographic beam steering
  20. On-chip integration of metasurface-doublet for optical phased array with enhanced beam steering
  21. Multi-frequency amplitude-programmable metasurface for multi-channel electromagnetic controls
  22. Broadband absorber with dispersive metamaterials
  23. Visible-mid infrared ultra-broadband and wide-angle metamaterial perfect absorber based on cermet films with nano-cone structure
  24. Vertical photon sorting by stacking silicon and germanium nanopillars for broadband absorbers
  25. Directive emission from polymeric fluorophore with epsilon-near-zero squaraine molecular film
  26. Chiral-magic angle of nanoimprint meta-device
  27. Fluorescence engineering in metamaterial-assisted super-resolution localization microscope
  28. Nano-shaping of chiral photons
  29. Design principles for electrically driven Luttinger liquid-fed plasmonic nanoantennas
  30. Ultrafast strong-field terahertz nonlinear nanometasurfaces
  31. Reconfigurable anomalous reflectors with stretchable elastic substrates at 140 GHz band
  32. Polarization-independent isotropic metasurface with high refractive index, low reflectance, and high transmittance in the 0.3-THz band
  33. Terahertz nanofuse by a single nanowire-combined nanoantenna
  34. Electrically tunable THz graphene metasurface wave retarders
  35. Ultra-thin grating coupler for guided exciton-polaritons in WS2 multilayers
  36. Reflection of two-dimensional surface polaritons by metallic nano-plates on atomically thin crystals
  37. A deep neural network for general scattering matrix
  38. Engineering isospectrality in multidimensional photonic systems
  39. Heterogeneously integrated light emitting diodes and photodetectors in the metal-insulator-metal waveguide platform
  40. DNA origami-designed 3D phononic crystals
  41. All-dielectric carpet cloaks with three-dimensional anisotropy control
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