Results 81 to 90 of about 7,840 (209)

Efficient Analysis of Photonic Crystal Slabs [PDF]

Journal of Lasers, Optics & Photonics, 2014
In this paper we propose an accelerated plane wave expansion method (PWEM) for calculation of slab photonic crystal (slab PC) modes. In this method instead of creating artificial periodicity in the direction of slab normal and solving the problem as a full 3D one, which is done in standard PWEM, we consider constant coefficients in 2D PWEM as functions
Mohammad Hasan Aram, Sina Khorasani
openaire   +1 more source

Guided resonances in photonic crystals with point-defected aperiodically-ordered supercells [PDF]

, 2009
In this paper, we study the excitation of guided resonances (GRs) in photonic-crystal slabs based on point-defected aperiodically-ordered supercells. With specific reference to perforated-slab structures and the Ammann-Beenker octagonal lattice geometry,
Andrea Cusano, Armando Ricciardi, Astratov, Bayindir, Della Villa, Della Villa, Di Gennaro, Fan, Fano, Gallina, Giuseppe Castaldi, Ilaria Gallina, Kilic, Levine, Luo, Marco Pisco, Notomi, Nozaki, Prasad, Prasad, Ricciardi, Sakoda, Shechtman, Stefania Campopiano, Steurer, Suh, Vincenzo Galdi, Yablonovitch   +27 more
core   +1 more source

Synergistic Engineering of Oxygen Vacancies and Topological Surface States in Bi2Te3/TiO2‐X Heterostructures for Highly Efficient Photothermal‐Driven CO2 Photoreduction

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Integrating the topological insulator Bi2Te3 with oxygen‐deficient TiO2‐X creates a synergistic platform for full‐spectrum CO2 reduction, achieving high‐selectivity C2+ production via enhanced photothermal catalysis and tailored charge dynamics.
Bingke Zhang, Chenchen Zhao, Jing Qiao, Changcun Li, Yang Wang, Xingshuo Liu, Dongbo Wang, Gang Liu, Zhao Qian, Rajeev Ahuja, Jinzhong Wang, Degang Zhao   +11 more
wiley   +1 more source

Parity-time symmetry from stacking purely dielectric and magnetic slabs

, 2015
We show that Parity-time symmetry in matching electric permittivity to magnetic permeability can be established by considering an effective Parity operator involving both mirror symmetry and coupling between electric and magnetic fields.
Chu, S. T., Gear, James, Li, Jensen, Liu, Fu, Rotter, Stefan   +4 more
core   +2 more sources

Physical origin of the high energy optical response of three-dimensional photonic crystals [PDF]

, 2007
The physical origin of the optical response observed in three-dimensional photonic crystals when the photon wavelength is equal or lower than the lattice parameter still remains unsatisfactorily explained and is the subject of an intense and interesting ...
Depine, Ricardo A., Dorado, Luis A., Lozano Barbero, Gabriel Sebastián, Míguez García, Hernán Ruy   +3 more
core   +2 more sources

Surface waves in photonic crystal slabs [PDF]

Physical Review B, 2006
Photonic crystals with a finite size can support surface modes when appropriately terminated. We calculate the dispersion curves of surface modes for different terminations using the plane wave expansion method. These non-radiative surface modes can be excited with the help of attenuated total reflection technique. We did experiments and simulations to
Wang, Bingnan, Dai, Weitao, Fang, Anan, Zhang, Lei, Tuttle, Gary, Koschny, Thomas, Soukoulis, Costas M.   +6 more
openaire   +2 more sources

Breakdown of bulk-radiation correspondence in radiative photonic lattices

Physical Review Research
The topological characteristics of energy bands in crystalline systems are encapsulated in the Berry curvature of the bulk Bloch states. In photonic crystal slabs, far-field emission from guided resonances naturally provides a noninvasive way to probe ...
Xinyi Yuan, Loïc Malgrey, Helgi Sigurðsson, Hai Son Nguyen, Grazia Salerno   +4 more
doaj   +1 more source

Dual Ferro‐/Piezo‐Electric Coupling in Two‐Dimensional [Bi2O2]‐Based Layered Structures for Synergistic Harvesting of Mechanical and Solar Energy

Exploration, EarlyView.
Inter‐plane 2D/2D nanosheet heterojunction based on two piezoelectric [Bi2O2]‐based layered compounds is constructed. Significantly increased piezoelectric properties of BiOBr@Bi5Ti3FeO15 by morphological regulation and interface chemical bonds. Dual‐piezoelectric field can modulate interfacial electric field and the interfacial band bending to ...
Daotong You, Xingwang Long, Zhiyong Yang, Lei Liu, Jianbang Chen, Tuan Guo   +5 more
wiley   +1 more source

What is the Brillouin Zone of an Anisotropic Photonic Crystal? [PDF]

, 2015
The concept of the Brillouin zone (BZ) in relation to a photonic crystal fabricated in an optically anisotropic material is explored both experimentally and theoretically. In experiment, we used femtosecond laser pulses to excite THz polaritons and image
Maznev, A. A., Nelson, K. A., Ofori-Okai, B. K., Sivarajah, P.   +3 more
core   +2 more sources

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

InfoMat, EarlyView.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source