Results 51 to 60 of about 806 (172)
Nanophotonics, Volume 15, Issue 10, 27 May 2026.We demonstrate an indirect magneto‐optical coupling mechanism that overrides the symmetry‐induced suppression of s‐polarized TMOKE. A quasi‐two‐dimensional grating coordinates orthogonal resonances to establish a near‐zero reflection background and maximal near‐field asymmetry, achieving a theoretical‐limit TMOKE of ∼2.
Zicheng Yang +8 more
wiley +1 more source
Guided-Mode Resonances in GaN Membrane Grating
IEEE Photonics Journal, 2014 This paper proposes guided-mode resonant GaN grating that are implemented on a GaN-on-silicon wafer structure. Numerical simulations based on rigorous coupled wave analysis (RCWA) are performed to model multiple resonances in thick GaN membranes.
Zheng Shi +7 more
doaj +1 more source
Polarization-Independent Two-Layer Grating With Five-Port Splitting Output Under Normal Incidence
IEEE Photonics Journal, 2020 In this paper, we report a two-layer five-port diffraction grating by a polarization-independent design under normal incidence. To be different from conventional five-port gratings, initially, we design a novel two-layer grating with operation in ...
Bowen Gong, Huiying Wen, Hongtao Li
doaj +1 more source
Nanophotonics, Volume 15, Issue 9, 13 May 2026.Mechanically reconfigurable metasurfaces enable high‐capacity optical storage and holography due to low cost/complexity. A differentiable inverse design framework maps meta‐atom geometries to multichannel optical responses via deep neural networks. Rotatable cascaded metasurfaces optimized through this pipeline achieve pixel‐level holography with 288 ...
Ting Ma +4 more
wiley +1 more source
International Journal of Automation and Smart Technology, 2014 Large differences in the refractive index between semiconductors (Si, GaAs, etc.) and air produces considerable Fresnel loss, which can seriously hinder the absorption of sunlight by photovoltaic solar cells.
Yen-Yu Chou +2 more
doaj +1 more source
Advanced Functional Materials, Volume 36, Issue 37, 7 May 2026.ABSTRACT Metal oxide (MOx)‐based NO2 gas sensors typically require high temperatures or ultraviolet light, limiting their practical use. To enable visible‐light activation at room temperature, efficient and stable photosensitizers should be integrated with nanostructured MOx hosts.
Yeonji Yuk +10 more
wiley +1 more source
Reconciling measured scattering response of 3D metamaterials with simulation
EPJ Applied Metamaterials, 2015 Membrane projection lithography is used to create 3-dimensional unit cells in a silicon matrix decorated with metallic inclusions. The structures show pronounced resonances in the 4–16 µm wavelength range and demonstrate direct coupling to the magnetic ...
Adomanis Bryan M. +2 more
doaj +1 more source
Advanced Sensor Research, Volume 5, Issue 4, April 2026.In plasmonic systems, quasi‐BICs are constrained by nonradiative losses, making radiative–absorptive balance essential. We analyze substrate‐induced hybridization in silver metasurfaces, showing that thickness relative to the skin depth yields three sensitivity regimes. Dual symmetry control tunes radiative and absorptive decay, optimizing coupling and
Ankit Singh +5 more
wiley +1 more source
Nanophotonics, Volume 15, Issue 8, 24 April 2026.A pattern‐free nonreciprocal emitter is demonstrated, exhibiting strong nonreciprocity (η > 0.6 or 0.8) across an unprecedented angular range (Δθ = 75° or 60°) at the target wavelength with monochromaticity of Δλ/λ₀ < 0.54%. The wavelength is tunable without compromising the rainbow‐free or ultrawide angular response, establishing a generalizable ...
Kaixia Xu +4 more
wiley +1 more source
Nanophotonics, Volume 15, Issue 8, 24 April 2026.The Green’s function integral framework provides a unified physical picture of microscopic phase mismatch and introduces a phase‐matching factor (PMF) as a quantitative design metric for harmonic coherence. By rational phase engineering, this approach achieves a PMF of 0.91 and an SHG efficiency of 26.7% in compact nonlinear nanophotonic devices ...
Chengkang Liang +4 more
wiley +1 more source