Results 161 to 170 of about 789,573 (302)

Engineering Slow‐Carrier Interfacial Recombination Enables Tailored Spectral Response

open access: yesAdvanced Science, EarlyView.
This work demonstrates that weak‐drift slow carriers are preferentially captured at generic semiconductor surfaces/interfaces and recombine. This process is manipulated to achieve tailored spectral response. A tens of µm‐wide depletion region is created to observe surface collection rates for photocarriers generated at different positions.
Yibo Zhang   +5 more
wiley   +1 more source

Distribution of seasonal variation of point refractivity gradient and geo-climatic factor over Ede-Nigeria [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST)
The quantification of anomalies in radio signal transmission has been a serious challenge in using data from radiosondes to determine meteorological parameters in Ede, Nigeria.
Sanyaolu Modupe
doaj  

Physics‐Aware Machine‐Learning‐Driven Inverse Design of Broadband Ultra‐Open Acoustic Metamaterials

open access: yesAdvanced Science, EarlyView.
A physics‐aware machine‐learning framework enables inverse design of ultra‐open acoustic silencers by decoupling spectral and radial design spaces. The approach rapidly identifies broadband, compact, and highly ventilated architectures, while revealing hidden linear design rules that link geometry, impedance matching, and acoustic performance.
Zhiwei Yang   +5 more
wiley   +1 more source

CoSP: Reconfigurable Metamaterial Inverse Design via Contrastive Pretrained Large Language Model

open access: yesAdvanced Science, EarlyView.
In this work, CoSP (contrastive multi‐state pretrain), an intelligent inverse design method for reconfigurable metamaterials based on a contrastive pretrained large language model, is proposed. Numerical experiments demonstrate that CoSP can design reconfigurable metamaterial structures for multi‐state, multi‐band optical responses, showing great ...
Shujie Yang   +4 more
wiley   +1 more source

Ionospheric Refraction Correction in Radio Astronomy

open access: yesChinese Journal of Space Science, 1986
Yan Chai, Wen-jun Han
openaire   +1 more source

Structural Control Over Bicontinuous Emulsions from Solvent‐Transfer Induced Phase Separation Through Nanoparticle Loading

open access: yesAdvanced Science, EarlyView.
The nanoparticle loading enables effective control over the liquid domain size in bicontinuous interfacially jammed emulsion gels (bijels) produced through solvent‐transfer induced phase separation (STrIPS). The relationship between the nanoparticle loading and domain size profiles in STrIPS bijels is resolved through confocal microscopy and explained ...
Jesse M. Steenhoff, Martin F. Haase
wiley   +1 more source

Entrevista homenaje a la historiadora Elsa Malvido (1941-2011). Jueves de Charla en Radio INAH

open access: yes, 2012
El 9 de abril de 2011, murió en la Ciudad de México la maestra Elsa Malvido, brillante investigadora que formó parte de la Dirección de Estudios Históricos del Instituto Nacional de Antropología e Historia.
Radio INAH
core  

Engineering Large‐Grain Metal Halide Perovskite Films via Chemical Vapor Deposition for High‐Performance, Ultralow‐Noise Perovskite Photodetectors

open access: yesAdvanced Science, EarlyView.
Chemical vapor deposition produces large‐grain, phase‐pure CsPbBr3 films (grains up to 35 µm) with Drude‐like terahertz photoconductivity and twofold higher carrier mobility versus spin‐coated references. These microstructural advances translate into photodetectors with a detectivity of 8.4 × 1012 Jones, dark current below 1 pA cm−2, X‐ray sensitivity ...
Roel Vanden Brande   +14 more
wiley   +1 more source

Application of artificial neural network modeling techniques to signal strength computation. [PDF]

open access: yesHeliyon, 2021
Igwe KC   +4 more
europepmc   +1 more source

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