Results 31 to 40 of about 398 (215)
On the interplay of waveguide modes and leaky modes in corrugated OLEDs
Optics Express, 2011 Bragg gratings incorporated into organic light-emitting diodes (OLEDs) establish a coupling between waveguide modes and useful light (leaky modes). Here we demonstrate that the net coupling direction depends on the OLED stack design. We fabricated two different device structures with gold Bragg gratings.
Hauss, J. +4 more
openaire +4 more sources
Influence of Subwavelength Grating Asymmetry on Long-Wavelength Infrared Transmittance Filters
IEEE Photonics Journal, 2018 Subwavelength dielectric gratings provide a means of narrowband spectral filtering by coupling to quasi-guided leaky modes, providing a high reflectivity background and narrowband transmittance via Fano resonance behavior.
Michael Barrow +2 more
doaj +1 more source
Leaky mode integrated optical fibre refractometer [PDF]
Optics Express, 2018 A route to monitor external refractive indices greater than the core index of the waveguide is presented. Initial application utilizes an integrated optical fibre (IOF) platform due to its potential for use in harsh environment sensing. IOF is fabricated using a bespoke flame hydrolysis deposition process to fuse an optical fibre to a planar substrate ...
Alan C. Gray +6 more
openaire +3 more sources
Metalens and microtaper spectrometers on a fingertip
Light: Science & Applications, 2023 A multi-foci metalens and a leaky-mode microtaper provide innovative platforms to achieve high-resolution, wideband light spectra in millimeter-sized devices, thereby paving new ways for the commercialization of on-fingertip spectrometers.
Peixia Zheng, Xuan Zhang, Hong-Chao Liu
doaj +1 more source
Leaky Modes on a Grounded Wire-Medium Slab [PDF]
2007 IEEE/MTT-S International Microwave Symposium, 2007 Leaky modes supported by a grounded wire-medium slab are studied here in detail for the first time. Such leaky modes are responsible for highly-directive radiation when the structure is excited by a dipole source. The analysis is carried out by means of a rigorous full-wave numerical approach based on the method-of-moments and also by using an ...
BURGHIGNOLI, Paolo +4 more
openaire +5 more sources
Leaky modes in multilayer uniaxial optical waveguides [PDF]
Applied Optics, 1990 The propagation characteristics of the leaky modes in planar anisotropic waveguides with a multilayer structure have been investigated by means of a compact rigorous formalism. The leakage losses and leaky transition angle have been studied for the fundamental and first hybrid modes.
Torner Sabata, Lluís +2 more
openaire +5 more sources
FEBS Letters, EarlyView.In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai +9 more
wiley +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Beam Steerable Half Mode SIW Leaky-Wave Antenna Using FPMS
IEEE Journal of Microwaves, 2023 A novel leaky wave antenna (LWA) with integrated field-programmable microwave substrate (FPMS) unit cells is presented in this article. The proposed antenna consists of a Half Mode Substrate Waveguide (HMSIW), loaded with cross-shaped slots to generate ...
Shahinshah Ali +2 more
doaj +1 more source
Spurious leaky mode solutions and experimental verification of the second leaky wave [PDF]
1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282), 2003 This presents the revelation of spurious leaky mode solutions of the dispersion equation, and experimental confirmation of the occurrence of the second leaky wave on the slotline. The appearance of the spurious improper nonphysical solution instead of the true improper physical mode propagation constant is explained.
J. Zehentner +4 more
openaire +1 more source