Results 31 to 40 of about 8,279 (219)
Rare‐Earth Yttrium Doping Advances High‐Performance AgSbTe2 Thermoelectrics
Advanced Energy Materials, EarlyView.Y‐doped AgSbTe2 achieves band and microstructure co‐optimization, with coherent Y‐Ag2Te interfaces enhancing phonon scattering and reducing lattice thermal conductivity to 0.26 W m−1 K−1. Combined with valence‐band broadening and increased carrier concentration, this yields ZT ≈ 2 at 623 K, average ZT = 1.5, and 7.3 % conversion efficiency of a single ...
Lan Li +11 more
wiley +1 more source
Self‐Assembled Telecom Color Centers in Silicon and Their Growth Environment
Advanced Physics Research, EarlyView.Influence of the growth pressure during the formation of self‐assembled color centers in silicon grown by molecular beam epitaxy at ultra‐low temperatures on the color center's photoluminescence spectral signature. The growth pressure crucially determines color center selectivity, as evidenced by G‐centers, W‐centers, and T‐centers, matrix purity, and ...
Jacqueline Marböck +9 more
wiley +1 more source
IEEE Photonics Journal, 2022 We report on 3-D FDTD simulation of waveguide-integrated plasmonic Ge/SiGe MQWs photodetectors. Despite several significant works on Ge/SiGe MQW optical modulators, Ge/SiGe MQW photodetectors still show improvable performance ...
Saranisorn Srikam +3 more
doaj +1 more source
A Code‐Invariant QSG–VGA Co‐Design Methodology for Compact CMOS Vector‐Sum Phase Shifters
International Journal of Circuit Theory and Applications, EarlyView.A circuit‐level co‐design methodology for compact vector‐sum phase shifters is presented, combining a code‐invariant common‐gate variable‐gain amplifier (VGA) with a resistorless quadrature signal generator (QSG). By maintaining an almost constant input resistance, explicit resistors are eliminated from the QSG.
Uxua Esteban Eraso +4 more
wiley +1 more source
JEADV Clinical Practice, EarlyView.ABSTRACT Artificial Intelligence is rapidly transforming allergology by enhancing diagnosis, risk prediction, automation, patient communication, education, and therapy development. Machine learning approaches, including convolutional neural networks, recurrent architectures, and transformer‐based models, enable analysis of complex datasets from ...
Sebastian Seurig +2 more
wiley +1 more source
Integrated Photonic Modulator Circuit With Programmable Intensity and Phase Modulation Response
Laser &Photonics Reviews, EarlyView.A platform‐agnostic programmable modulation circuit is introduced to enable tunable and universal optimization of integrated photonic modulators. By flexibly controlling carrier amplitude and phase, the approach adapts to diverse device characteristics without structural redesign.
Hong Deng +3 more
wiley +1 more source
Dislocation- and crosshatch-free high-mobility silicon two-dimensional electron gases [PDF]
APL MaterialsSi/SiGe heterostructures play pivotal roles in both gate-all-around technology for integrated circuits and spin qubits for quantum computing. Here, we report dislocation-free Si/SiGe heterostructures grown via molecular beam epitaxy on strain-relaxed ...
Jie-Yin Zhang +5 more
doaj +1 more source
Parallel Vector Processing in Optical Computing With Jacobi Time‐Wave Packets
Laser &Photonics Reviews, EarlyView.Functionality of a single neuron and state of the art photonic acceleration with a Mach‐Zehnder‐interferometer (MZI) mesh (i), a crossbar array (ii) and a micro ring resonator (MRR) array (iii). In the proposed Jacobi time‐wave packet approach (iv) a single modulator (here a ring modulator) is performing the whole scalar vector product in a single ...
Janosch Meier +5 more
wiley +1 more source
Investigation of thermal stability of Si0.7Ge0.3Si stacked multilayer with As ion-implantation
Materials Research Express, 2021 The effect of As ion implantation on the stability of SiGe/Si multilayer was systematically studied. The atomic percentage of Ge in as-grown SiGe layer was 30% in this work.
Yanrong Wang +9 more
doaj +1 more source
Cellular Mechanism and Key Insights in Allergen Immunotherapy for Allergic Rhinitis
World Journal of Otorhinolaryngology - Head and Neck Surgery, EarlyView.ABSTRACT Allergic rhinitis (AR) arises from immune responses mediated by immunoglobulin E (IgE) to inhaled allergens, representing one of the most prevalent chronic conditions worldwide. Although AR may not be a serious ailment, it holds clinical relevance as it underpins numerous complications, serves as a major risk factor for suboptimal asthma ...
Zhe Wang +3 more
wiley +1 more source