Results 91 to 100 of about 3,338 (308)
, 2010 A recent paper [1] has introduced a new class of dielectric resonator antennas (DRAs), the so-called supershaped DRAs (S-DRAs). This class of radiators took its name from the mathematical formula, known in literature as superformula (see [1] and ...
M Simeoni +11 more
core +1 more source
Role of the Recombination Zone in Organic Light‐Emitting Devices
Advanced Materials, EarlyView.This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley +1 more source
A Review of Circularly Polarized Dielectric Resonator Antennas: Recent Developments and Applications. [PDF]
Micromachines (Basel), 2022 Abd Rahman NA +7 more
europepmc +1 more source
, 2007 This paper investigates the potential of the finite-volume time-domain (FVTD) method for the numerical modeling of antennas. The most attractive features of conformal time-domain methods such as FVTD are their geometrical flexibility granted by the ...
Almpanis, G. +9 more
core +1 more source
Advanced Materials, EarlyView.ABSTRACT Microneedle arrays (MNAs) is a rapidly emerging technology with broad biomedical applications in drug delivery and biosensing. With sub‐millimeter dimensions and periodicity, MNAs possess geometries nearly ideal for biomedical devices operating within the terahertz (THz) spectral window.
Sang Hyun Lee +6 more
wiley +1 more source
Design of High Gain and Broadband Antennas at 60 GHz for Underground Communications Systems
International Journal of Antennas and Propagation, 2012 A new broadband and high gain dielectric resonator antenna for millimeter wave is presented. The investigated antenna configuration consists of a periodic square ring frequency selective surfaces on a superstrate, an aperture-coupled scheme feed, an ...
Yacouba Coulibaly +3 more
doaj +1 more source
Semi-trapezoidal dielectric resonator antenna for wideband applications
, 2007 A semi-trapezoidal probe-fed dielectric resonator antenna (DRA) of very wide bandwidth is studied theoretically and experimentally. The design is an evolution of the double-slab DRA that exploits the advanced antenna geometry and the position of the ...
Almpanis, G. +5 more
core +1 more source
Advanced Materials, EarlyView.Solvent‐mediated reactivity control of Lewis‐paired dopants enables highly efficient, finely tunable, and stable doping of organic semiconductors. The optimally doped semiconductor films exhibit superior thermoelectric performance and doping stability, feature delocalized polarons along structurally ordered polymer backbones, and outperform ...
Sang Beom Kim +5 more
wiley +1 more source
Advanced Materials, EarlyView.Molecular doping of conjugated polymers is fundamentally constrained by thermodynamic phase behavior. This Perspective reframes doping efficiency and stability in terms of miscibility limits, binodals, and solvus boundaries, highlighting the role of effective interaction parameters and charge transfer.
Somayeh Kashani +10 more
wiley +1 more source
A Graphene-Based Stopband FSS with Suppressed Mutual Coupling in Dielectric Resonator Antennas. [PDF]
Materials (Basel), 2021 Qian W +5 more
europepmc +1 more source