Results 51 to 60 of about 7,840 (209)
Observing Zitterbewegung for photons near the Dirac point of a two-dimensional photonic crystal
, 2007 It is shown, for the first time, that the zitterbewegung of photon can appear near the Dirac point in two-dimensional photonic crystal. The superiority of such a phenomenon for photons is that it can be found in different scaling structures with wide ...
E. Schrödinger +3 more
core +1 more source
Band gap engineering in simultaneous phononic and photonic crystal slabs [PDF]
, 2010 We discuss the simultaneous existence of phononic and photonic band gaps in two types of phononic crystals slabs, namely periodic arrays of nanoholes in a Si membrane and of Si nanodots on a SiO2 membrane. In the former geometry, we investigate in detail
Akjouj, A. +7 more
core +2 more sources
Sensitivity enhancement in photonic crystal slab biosensors
Optics Express, 2010 Refractive index sensitivity of guided resonances in photonic crystal slabs is analyzed. We show that modal properties of guided resonances strongly affect spectral sensitivity and quality factors, resulting in substantial enhancement of refractive index sensitivity.
Mohamed, El Beheiry +3 more
openaire +2 more sources
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 +1 more
doaj +1 more source
Imaging of Iso-frequency Contours via Resonance-Enhanced Scattering in Near-Pristine Photonic Crystals [PDF]
, 2016 The iso-frequency contours of a photonic crystal are important for predicting and understanding exotic optical phenomena that are not apparent from high-symmetry band structure visualizations.
Hsu, Chia Wei +7 more
core +2 more sources
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
Advanced Materials, EarlyView.Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora +17 more
wiley +1 more source
Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics
Advanced Materials, EarlyView.The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades +7 more
wiley +1 more source
On-chip optical diode based on silicon photonic crystal heterojunctions
, 2011 Optical isolation is a long pursued object with fundamental difficulty in integrated photonics. As a step towards this goal, we demonstrate the design, fabrication, and characterization of on-chip wavelength-scale optical diodes that are made from the ...
Almeida +27 more
core +1 more source
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. +3 more
core +2 more sources