42 citations · 187 across the 9 of their papers we have counts for
9 papers
Hidden Symmetry Protection and Topology in Surface Maxwell Waves
Yosuke Nakata, Toshihiro Nakanishi, Ryo Takahashi +2
Since the latter half of the 20th century, the use of metal in optics has become a promising plasmonics field for controlling light at a deep subwavelength scale. Surface plasmon p…
Dynamic quarter-wave metasurface for efficient helicity inversion of polarization beyond the single-layer conversion limit
Mitsuki Kobachi, Fumiaki Miyamaru, Toshihiro Nakanishi +3
Terahertz chiral sensing and polarization-multiplexing communication demand subwavelength devices that dynamically invert polarization helicity. Metasurfaces can enhance anisotropy…
Reconfigurable terahertz quarter-wave plate for helicity switching based on Babinet inversion of anisotropic checkerboard metasurface
Yosuke Nakata, Kai Fukawa, Toshihiro Nakanishi +3
Dynamic helicity switching by utilizing metasurfaces is challenging because it requires deep modulation of polarization states. To realize such helicity switching, this paper propo…
Energy loss of terahertz electromagnetic waves by nano-sized connections in near-self-complementary metallic checkerboard patterns
Keisuke Takano, Yoku Tanaka, Gabriel Moreno +9
The design of a self-complementary metallic checkerboard pattern achieves broadband, dispersion-less, and maximized absorption, concentrating in the deep subwavelength resistive co…
Freestanding transparent terahertz half-wave plate using subwavelength cut-wire pairs
Yosuke Nakata, Yudai Taira, Toshihiro Nakanishi +1
We designed a cut-wire-pair metasurface that works as a transparent terahertz half-wave plate, by matching the electric and magnetic resonances of the structure. Due to the impedan…
Observation of Fano resonance using a coupled resonator metamaterial composed of meta-atoms arranged by double periodicity
Tsubasa Nishida, Yosuke Nakata, Fumiaki Miyamaru +2
We studied the transmission characteristics of a planar metamaterial consisting of an array of electric split-ring resonators (eSRRs) with double periodicity. Because of coupling b…
Anisotropic Babinet-invertible metasurfaces to realize transmission-reflection switching for orthogonal polarizations of light
Yosuke Nakata, Yoshiro Urade, Kunio Okimura +4
The electromagnetic properties of an extremely thin metallic checkerboard drastically change from resonant reflection (transmission) to resonant transmission (reflection) when the…
Supersymmetric correspondence in spectra on a graph and its line graph: From circuit theory to spoof plasmons on metallic lattices
Yosuke Nakata, Yoshiro Urade, Toshihiro Nakanishi +3
We investigate the supersymmetry (SUSY) structures for inductor-capacitor circuit networks on a simple regular graph and its line graph. We show that their eigenspectra must coinci…
Dynamically Babinet-invertible metasurface: a capacitive-inductive reconfigurable filter for terahertz waves using vanadium-dioxide metal-insulator transition
Yoshiro Urade, Yosuke Nakata, Kunio Okimura +4
This paper proposes a reconfigurable planar metamaterial that can be switched between capacitive and inductive responses using local changes in the electrical conductivity of its c…