Results 41 to 50 of about 315,046 (231)

Complex effective permittivity of a lossy composite material [PDF]

open access: yes, 1996
In recent work, boundary integral equations and finite elements were used to study the (real) effective permittivity for two-component dense composite materials in the quasistatic limit.
Beroual, Abderrahmane   +3 more
core   +3 more sources

Potato tuber permittivity during deformation in compression

open access: yesResearch in Agricultural Engineering, 2007
Potato tuber specimens of two varieties (Nicola and Saturna) were deformed in a compression loading/unloading test. The tuber complex permittivity spectrum at frequencies 0.1-500 kHz was measured repeatedly during the deformation.
J. Blahovec, J. Sobotka
doaj   +1 more source

The negative index of refraction demystified

open access: yes, 2002
We study electromagnetic wave propagation in mediums in which the effective relative permittivity and the effective relative permeability are allowed to take any value in the upper half of the complex plane.
Akhlesh Lakhtakia   +5 more
core   +2 more sources

Image theory for a sphere with negative permittivity

open access: yes, 2019
An image system for a point charge outside a dielectric sphere is presented for all complex values of relative permittivity $\epsilon=\epsilon'+i\epsilon''$.
Majic, Matt
core   +1 more source

Generation of Prior Information in a Dual-Mode Microwave-Ultrasound Breast Imaging System

open access: yesSensors, 2022
A new breast imaging system capable of obtaining ultrasound and microwave scattered-field measurements with minimal or no movement of the breast between measurements has recently been reported.
Hannah Fogel   +4 more
doaj   +1 more source

Parallel preconditioners for high order discretizations arising from full system modeling for brain microwave imaging [PDF]

open access: yes, 2016
This paper combines the use of high order finite element methods with parallel preconditioners of domain decomposition type for solving electromagnetic problems arising from brain microwave imaging.
Bonazzoli   +10 more
core   +4 more sources

Dielectric spectroscopy of PETG/TiO2 composite intended for 3D printing

open access: yesVirtual and Physical Prototyping, 2023
3D-printed electronics belong to new approaches to how to build a complex object with multiple desired functions. For that purpose, materials with specific electric properties are needed: conductors, insulators, magnetics, or dielectrics with high ...
Petr Veselý   +5 more
doaj   +1 more source

A study on the transferable skills of the engineering students at Universiti Tun Hussein Onn Malaysia [PDF]

open access: yes, 2017
The purpose of this study was to identify the students' levels of awareness of the importance of transferable skills and the mastery of the aspects of adaptive, critical thinking, and problem-solving.
Abd Baser, Jamil   +3 more
core   +2 more sources

Method for Computationally Efficient Design of Dielectric Laser Accelerators [PDF]

open access: yes, 2017
Dielectric microstructures have generated much interest in recent years as a means of accelerating charged particles when powered by solid state lasers.
England, R. Joel   +4 more
core   +3 more sources

ELECTROCHEMICAL MODEL OF Euglena sanguinea Ehrenberg STIMULATED WITH MULTI-LEVEL ELECTROMAGNETIC FIELDS

open access: yesASEAN Journal on Science and Technology for Development, 2017
This research aimed at studying the property of Euglena Sanguinea Ehrenberg (E. sanguinea) before and after being stimulated by multi-level electromagnetic fields (MLEM).
K. Packamwongsang   +5 more
doaj   +3 more sources

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