Results 51 to 60 of about 12,368,946 (291)

Numerical simulation of 2D electrodynamic problems with unstructured triangular meshes [PDF]

Компьютерная оптика, 2019
We present a generalization of standard leap-frog plus Yee mesh approach for Cauchy problem in electrodynamics simulations on unstructured triangulated mesh.
Daniil Fadeev
doaj   +1 more source

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

Advanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang, Temesgen Tadeyos Zate, Peiren Wang, Soumyajit Mojumder, Elo Overgaard Mogensen, Oriol Gavalda‐Diaz, Zihe Li, Shitong Zhou, Ajeet Kumar, James Roscow, Hamideh Khanbareh, Astri Bjørnetun Haugen, Florian Bouville   +12 more
wiley   +1 more source

Gauge-Free Whittaker Potentials to Model Wave Propagation in Homogeneous Medium

IEEE Open Journal of Antennas and Propagation
This article deals with alternative scalar potential formulations where no side effect associated to gauging exists whose purpose is to enhance the variety of accessible methods for efficient calculations of electromagnetic (EM) wave fields.
Thomas Reum
doaj   +1 more source

Broadband Silicon‐On‐Glass Reflective Dielectric Metasurface for THz Beam Steering in 6G Wireless Networks

Advanced Functional Materials, EarlyView.
A CMOS‐compatible, all‐dielectric Silicon‐on‐Glass reflective metasurface enables low–loss terahertz wavefront control for future 6G wireless communication. Mie‐resonant silicon pillars provide full phase coverage near 500 GHz, achieving experimentally validated single‐, dual‐, and five‐beam steering with sub‐1.5° angular error and less than 3 dB ...
Rithwik Premanand, Yi Ji Tan, Thomas CaiWei Tan, Prakash Pitchappa, Hemanth Kumar Cheemalamarri, A. S. Madhukumar, Ranjan Singh   +6 more
wiley   +1 more source

Hydrostratigraphic modeling using multiple-point statistics and airborne transient electromagnetic methods [PDF]

Hydrology and Earth System Sciences, 2018
Creating increasingly realistic groundwater models involves the inclusion of additional geological and geophysical data in the hydrostratigraphic modeling procedure.
A. A. S. Barfod, A. A. S. Barfod, I. Møller, A. V. Christiansen, A.-S. Høyer, J. Hoffimann, J. Straubhaar, J. Caers   +7 more
doaj   +1 more source

Gradient‐Conductivity Architecture Enables Synchronous Enhancement of Sensitivity and Detection Range in Multifunctional All‐Paper Sensors

Advanced Functional Materials, EarlyView.
A gradient‐engineered all‐paper sensor is fabricated by integrating MXene and in situ grown AgNPs within hierarchical cellulose networks. The device breaks the sensitivity–detection range trade‐off through cascaded conductive pathways, enabling ultrahigh pressure sensitivity, humidity–pressure decoupled dual‐mode sensing, and outstanding EMI shielding,
Ao Li, Jun Xu, Dezhong Xu, Zhaohui Zhang, Jiyi Li, Daxian Cao, Kefu Chen, Mizi Fan   +7 more
wiley   +1 more source

Effects of radiofrequency electromagnetic field exposure on sleep quality [PDF]

, 2013
The use of wireless communication devices, which emit radiofrequency electromagnetic fields (RF-EMF), has increased in the past decades. According to the World Health Organization (WHO) mobile phone use is ubiquitous with an estimated 4.6 billion ...
Mohler, Evelyn
core   +1 more source

Modal Analysis of Light Propagation, Polarization and Diffraction by Cholesteric Liquid Crystal Layers

Advanced Functional Materials, EarlyView.
The analysis of optical eigenmodes in chiral liquid crystal with perpendicular or tilted helical axis, and their correspondence with the external medium, leads to an intuitive understanding of the angle and wavelength dependency of transmissive and reflective diffraction.
Ke Xu, Pouya Nosratkhah, Le Zhou, Shengzhu Yi, Giorgio Manzoni, Kristiaan Neyts   +5 more
wiley   +1 more source

Electromagnetic measurement of bubble velocity in two-phase dielectric fluid flow [PDF]

, 1997
This thesis deals with the theoretical and experimental investigation of two-phase flow for a dielectric liquid electromagneticf lowmeter. So far only limited investigationsi nto the possibleu se of electromagneticf lowmeters for multiphasef low ...
Donhauser, Norbert
core   +5 more sources

Predicting Electromagnetic Field Exposure Using Artificial Intelligence Methods

IEEE Access
This study explores the application of Artificial Intelligence (AI) in predicting electromagnetic field (EMF) exposure levels in urban environments. Machine Learning (ML) and Deep Learning (DL) models were developed to estimate the electric field (E, in ...
Athanasios Manassas, Spyridon Delidimitriou, Joe Wiart, Theodoros Samaras   +3 more
doaj   +1 more source