Results 91 to 100 of about 315,046 (231)

Electromagnetic Absorption of Gaussian Beams by a Grounded Layered Structure [PDF]

open access: yes, 2013
A layered structure of magnetodielectric slabs, backed with a perfectly conducting plane, is illuminated by a Gaussian beam. The permittivities and permeabilities of each layer are selected so that the incident field penetrates smoothly into the ...
Valagiannopoulos, C. A.
core   +1 more source

Detection Limit for Optically Sensing Specific Protein Interactions in Free-solution

open access: yes, 2017
Optical molecular sensing techniques are often limited by the refractive index change associated with the probed interactions. In this work, we present a closed form analytical model to estimate the magnitude of optical refractive index change arising ...
Sasikumar, Harish, Varma, Manoj M.
core   +1 more source

Technique of Coaxial Frame in Reflection for the Characterization of Single and Multilayer Materials with Correction of Air Gap

open access: yesInternational Journal of Antennas and Propagation, 2014
Techniques based on fixture probes in reflection are used in microwave reflectometry as a novel diagnostic tool for detection of skin cancers, for complex permittivity measurements on liquid samples and oil shale, and for complex dielectric permittivity
Zarral Lamia   +2 more
doaj   +1 more source

Dependence of microwave absorption properties on ferrite volume fraction in MnZn ferrite/rubber radar absorbing materials

open access: yes, 2011
We report the analysis of measurements of the complex magnetic permeability ($\mu_r$) and dielectric permittivity ($\epsilon_r$) spectra of a rubber radar absorbing material (RAM) with various MnZn ferrite volume fractions.
Dantas, Christine C.   +2 more
core   +1 more source

A solution of the inverse problem for the Havriliak – Negami model in detecting breast tumors using impedance spectroscopy

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки
Background. The inverse problem of calculating coefficients in the Havriliak – Negami model is considered in order to determine the structure of an inhomogeneous dielectric object based on the determination of parameters and analysis of the frequency ...
Yuriy G. Smirnov   +2 more
doaj   +1 more source

On mediums with negative phase velocity: a brief overview

open access: yes, 2002
Several issues relating to oppositely directed phase velocity and power flow are reviewed. A necessary condition for the occurrence of this phenomenon in isotropic dielectric-magnetic mediums is presented.
Gerardin, Jaline   +4 more
core   +2 more sources

COMPLEX PERMEABILITY AND PERMITTIVITY VARIATION OF CARBONYL IRON RUBBER IN THE FREQUENCY RANGE OF 2 TO 18 GHZ. doi: 10.5028/jatm.2010.02015962

open access: yesJournal of Aerospace Technology and Management, 2011
The complex dielectric permittivity (Ɛ) and magnetic permeability (μ) of Radar Absorbing Materials (RAM) based on metallic magnetic particles (carbonyl iron particles) embedded in a dielectric matrix (silicon rubber) have been studied in the frequency ...
Adriana Medeiros Gama   +1 more
doaj  

Plasmonic Metamaterials: Physical Background and Some Technological Applications [PDF]

open access: yes, 2019
New technological frontiers appear every year, and few are as intriguing as the field of plasmonic metamaterials (PMMs). These uniquely designed materials use coherent electron oscillations to accomplish an astonishing array of tasks, and they present ...
Schmidt, Benjamin G.
core   +1 more source

Simpler Reference-Plane-Invariant Method for Permittivity Extraction of Medium- or Low-Loss Dielectric Samples Using One-Port Measurements

open access: yesIEEE Access
A microwave method is devised to extract relative complex permittivity ( $\varepsilon _{r}$ ) of medium- or low-loss dielectric samples. It is simpler, non-iterative, reference-plane-invariant (RPI), and applicable for one-port waveguide measurements ...
Ugur Cem Hasar   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy