Results 81 to 90 of about 14,300 (240)

Interplay between crystal-size and disorder effects in the high-energy optical response of photonic crystal slabs [PDF]

, 2007
Experimental reflectance spectra have been obtained for colloidal crystals whose widths ranged from one to several sphere monolayers, and their features in the higher order band energy range have been reproduced theoretically.
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

Topological Materials and Related Applications

Advanced Electronic Materials, EarlyView.
This review covers topological materials—including topological insulators, quantum valley Hall and quantum spin Hall insulators, and topological Weyl and Dirac semimetals—as well as their most recent advancements in fields such as spintronics, electronics, photonics, thermoelectrics, and catalysis.
Carlo Grazianetti, Roberto Mantovan, Emanuele Longo, Harold J. W. Zandvliet, Pantelis Bampoulis, Yu Pan, Fan Li, Xia Wang, Payton Downey, Alessandro Molle   +9 more
wiley   +1 more source

Metasurfaces and Metadevices for Topological Electromagnetic Waves

Advanced Physics Research, EarlyView.
Optical topologies refer to diverse topological localized structures made by diverse parameters of light fields, such as vortices, skyrmions, and hopfions. This article navigates a direction of metasurface‐based integrated devices for generation, manipulation and detection of novel topologies of light, which would be a rapidly growing interdisciplinary
Rensheng Xie, Nilo Mata‐Cervera, Xi Xie, Yijie Shen   +3 more
wiley   +1 more source

A Novel Method for Band Structure Analysis of Photonic Crystal Slabs

IEEE Photonics Journal, 2011
We propose a new method to extract the modes of photonic crystal slabs and, thus, obtain their band structures. These slabs, which are 2-D periodic structures with finite thickness, can completely confine light and have the important advantage of simple ...
S. A. H. Nekuee, M. Akbari, K. Mehrany
doaj   +1 more source

Photonic quasi-crystal LEDs: design, modelling, and optimisation

, 2007
In this paper we investigate improvement in performance attainable by etching Photonic Crystals and Photonic Quasi-Crystals into the top emitting surface of LEDs.
Charlton, M.D.B., Lee, T., Zoorob, M.E.
core   +1 more source

General Recipe for Designing Photonic Crystal Cavities [PDF]

, 2005
We describe a general recipe for designing high-quality factor (Q) photonic crystal cavities with small mode volumes. We first derive a simple expression for out-of-plane losses in terms of the k-space distribution of the cavity mode.
Englund, Dirk, Fushman, Ilya, Vuckovic, Jelena   +2 more
core   +1 more source

Understanding Oxide Surface Stability: Theoretical Insights From Silver Chromate

Advanced Physics Research, EarlyView.
Seven low‐index Miller surfaces, comprising 46 distinct terminations, were systematically investigated to determine their surface free energies as functions of the chemical potentials of the system constituents. The competition among these terminations gives rise to temperature‐dependent stability crossovers that dynamically reshape the surface energy ...
A. Facundes, T. T. Dorini, T. W. von Zuben, M. A. San‐Miguel   +3 more
wiley   +1 more source

Reconfigurable, Defect-Free, Ultrahigh-Q Photonic Crystal Microcavities for Sensing

Sensors, 2013
We propose a new approach for creating reconfigurable high-Q cavities in defect-free photonic crystal slabs (PCSs). The approach relies on selective air-hole infiltration in otherwise defect-free PCSs.
Snjezana Tomljenovic-Hanic, C. Martijn de Sterke   +1 more
doaj   +1 more source

Resonance-forbidden second-harmonic generation in nonlinear photonic crystals

Nanophotonics, 2021
Second harmonic generation through nonlinear nano-photonic structures is important in both classical and quantum applications. It is commonly expected that the second harmonic frequency can always be generated as long as appropriate quadratic ...
Jin Jicheng, Lu Jian, Zhen Bo
doaj   +1 more source