Results 101 to 110 of about 2,268,510 (290)

Modular Critical Element Recycling Platform Using a Nanoporous Additively Manufactured Gyroid

open access: yesAdvanced Engineering Materials, EarlyView.
A modular recycling platform integrates 3D‐printed nanoporous gyroid structures to enable efficient critical element recovery. This system utilizes a hierarchical architecture, combining macroscopic channels with polymerization‐induced nanoscale porosity. By systematically tuning structural wall thickness and resin formulation, the platform achieves an
Xiangyu Gao   +6 more
wiley   +1 more source

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

open access: yesAdvanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle   +5 more
wiley   +1 more source

Performance of ICU ventilators during noninvasive ventilation with large leaks in a total face mask: a bench study

open access: yesJornal Brasileiro de Pneumologia, 2014
Objective: Discomfort and noncompliance with noninvasive ventilation (NIV) interfaces are obstacles to NIV success. Total face masks (TFMs) are considered to be a very comfortable NIV interface. However, due to their large internal volume and consequent
Maria Aparecida Miyuki Nakamura   +3 more
doaj   +1 more source

Anomalous leaky-mode dispersion of coupled-cavity wideband leaky-wave antennas

open access: yes, 2018
We report the anomalous modal dispersion in leaky-wave antennas composed of two coupled resonant cavities tuned for wideband response. The increase in gain bandwidth has been previously associated with the synthesis of a positive-slope phase response ...
S. Rottenberg   +11 more
core   +1 more source

Semantic Modeling in Materials Science and Engineering With Platform MaterialDigital Core Ontology 3.0

open access: yesAdvanced Engineering Materials, EarlyView.
The community‐driven Platform MaterialDigital Core Ontology (PMDco) 3.0 is introduced as a Basic Formal Ontology‐aligned semantic backbone for the processing–structure–properties paradigm in Materials Science and Engineering. Modular engineering, automated releases, and validation workflows are highlighted and key semantic patterns for materials ...
Markus Schilling   +15 more
wiley   +1 more source

Design and Experimental Validation of an E-Band Wideband Bessel-Beam Launcher on Quartz

open access: yesIEEE Journal of Microwaves
Radially periodic Bessel-beam launchers are typically fed with coaxial probes, as they provide a simple and effective means to obtain TM-polarized Bessel beams.
Edoardo Negri   +8 more
doaj   +1 more source

Leaky modes of a left-handed slab

open access: yesJournal of the European Optical Society-Rapid Publications, 2008
Using complex plane analysis we show that left-handed slab may support either leaky slab waves, which are backward because of negative refraction, or leaky surface waves, which are backward or forward depending on the propagation direction of the surface wave itself. Moreover, there is a general connection between the reflection coefficient of the left-
Moreau, Antoine, Felbacq, Didier
openaire   +4 more sources

Design of Proximity-Coupled Microstrip Leaky Mode Array and Half-Width Microstrip Leaky Mode Antennas

open access: yes, 2014
本論文研究包含一鄰近耦合微帶漏模天線陣列,一半微帶線寬度之雙漏模天線,與一反向激發之互耦合半微帶線寬度之漏模天線。 在鄰近耦合微帶漏模天線陣列的研究中,本論文探討短於一真空波長的微帶線之漏模輻射特性並利用鄰近耦合激發方式將其設計為天線陣列單元。同時並設計一天線陣列的匹配負載單元,其負載單元提供了阻抗匹配功能進而使得天線陣列匹配頻寬增加,並抑制在負載端因反射造成的背面旁波束。研究中並建立天線單元的等校傳輸線模型用以預測陣列之輻射效率的等效傳輸線模型。天線陣列在10.525 GHz其增益量測值高達19.1 ...
Cheng, Guang-Fu, 鄭光甫
core  

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Inverse scattering designs of dispersion-engineered single-mode planar waveguides

open access: yes
We use an inverse-scattering (IS) approach to design single-mode waveguides with controlled linear and higher-order dispersion. The technique is based on a numerical solution to the Gelfand-Levitan-Marchenko integral equation, for the inversion of ...
Poletti, F., May, A.R., Zervas, M.N.
core   +1 more source

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