Results 81 to 90 of about 251,032 (331)
Advanced Functional Materials, EarlyView.A scintillating polymeric composites loaded with hafnia nanoparticles is engineered to obtain a highly luminous material, thus achieving a 400% improvement of the scintillation yield under soft X‐rays. The nanocomposite is employed to realize a multilayer heterostructured prototype scintillator than enable for ultrafast time coincidence resolution in ...
Matteo Sala +12 more
wiley +1 more source
Nonlinear self-flipping of polarization states in asymmetric waveguides
, 2012 Waveguides of subwavelength dimensions with asymmetric geometries, such as rib waveguides, can display nonlinear polarization effects in which the nonlinear phase difference dominates the linear contribution, provided the birefringence is sufficiently ...
Afshar, V. Shahraam +3 more
core +1 more source
Advanced Functional Materials, EarlyView.Carboxyl‐functionalized graphene quantum dots (cGQDs) exhibit high singlet oxygen quantum yield due to strong spin–orbit coupling. cGQDs achieve minimum bactericidal concentration of only 0.4 µg mL−1 against S. aureus under low‐intensity illumination.
Muhammad Hassnain +10 more
wiley +1 more source
Fabrication of Polymeric Multimode Waveguides for Application in the Local Area Network and Optical Interconnects. [PDF]
, 2000 We report the fabrication of multimode polymeric waveguides using spin coating, photolithography, and reactive ion etching. Different layer structures have been used, e.g., a UV curable resin is used as a core layer and PMMA as a lower and upper cladding.
Driessen, A. +4 more
core +1 more source
Onset of Delocalization in Quasi-1D Waveguides with Correlated Surface Disorder
, 2002 We present first analytical results on transport properties of many-mode waveguides with rough surfaces having long-range correlations. We show that propagation of waves through such waveguides reveals a quite unexpected phenomena of a complete ...
A. A. Abrikosov +22 more
core +1 more source
A Novel Photonic Material for Designing Arbitrarily Shaped Waveguides in Two Dimensions [PDF]
, 2003 We investigate numerically optical properties of novel two-dimensional photonic materials where parallel dielectric rods are randomly placed with the restriction that the distance between rods is larger than a certain value. A large complete photonic gap
Hase, Masashi +4 more
core +3 more sources
Scattering in twisted waveguides
Journal of Functional Analysis, 2014 28 pages; typos corrected; to appear in Journal of Functional ...
Georgi Raikov +3 more
openaire +6 more sources
Multimode nematicon waveguides [PDF]
Optics Letters, 2011 We report on the first experimental observation of higher-order modes guided by soliton-induced waveguides in unbiased nematic liquid crystals. We find that the nematicon waveguides operate in a bounded power region specific to each guided mode. Below this region the guided beams diffract, above it the mode mixing and coupling give rise to an unstable ...
Izdebskaya, Yana +3 more
openaire +5 more sources
Elucidating Sodium Ion Storage Mechanisms in Hard Carbon Anodes at the Electronic Level
Advanced Functional Materials, EarlyView.High‐resolution, multi‐frequency continuous wave, and pulsed Electron Paramagnetic Resonance (EPR) spectroscopy uncover the intricate Na ion storage mechanisms in hard carbon. This study reveals the coexistence of Na ion intercalation and solvent co‐intercalation, alongside a subsequent transition of Na ions from ionic to quasi‐metallic to metallic ...
Qingbing Xia +5 more
wiley +1 more source
Quasi-planar optics: computing light propagation and scattering in planar waveguide arrays
, 2009 We analyze wave propagation in coupled planar waveguides, pointing specific attention to modal cross-talk and out-of-plane scattering in quasi-planar photonics.
Barnes +32 more
core +1 more source