Results 21 to 30 of about 750,698 (280)

Q-based design equations for resonant metamaterials and experimental validation [PDF]

open access: yes, 2007
Practical design parameters of resonant metamaterials, such as loss tangent, are derived in terms of the quality factor $Q$ of the resonant effective medium permeability or permittivity.
Cummer, Steven A.   +2 more
core   +2 more sources

Screening effects in flow through rough channels [PDF]

open access: yes, 2006
A surprising similarity is found between the distribution of hydrodynamic stress on the wall of an irregular channel and the distribution of flux from a purely Laplacian field on the same geometry.
A. D. Araújo   +6 more
core   +1 more source

RF measurement of wire complex permeability

open access: yesElectronics Letters, 2003
The complex permeability of thin round wires is measured with a coaxial system at half-wavelength resonance, using surface impedance and low-loss transmission line concepts. A steel wire is measured over the band 300 MHz–3 GHz. The results compare well to measurements made early in the last century.
Stuart T.E.W., Reader H.C., Cloete J.H.
openaire   +2 more sources

Insights on the spatial configuration of collective spaces within forming dynamics: the relation between infrastructure and urban transformation in Plaça de les Glòries Catalanes [PDF]

open access: yes, 2016
The research seeks to produce insights on the spatial configuration of collective spaces where large scale infrastructure propels urban transformation.
Chiappini, María Cecilia   +2 more
core   +1 more source

A one-dimensional tunable magnetic metamaterial [PDF]

open access: yes, 2013
We present experimental data on a one-dimensional superconducting metamaterial that is tunable over a broad frequency band. The basic building block of this magnetic thin-film medium is a single-junction (rf-) superconducting quantum interference device (
Butz, S.   +4 more
core   +3 more sources

Electromagnetic Wave Absorption Properties of Cation-Substituted Ba0.5Sr0.5Zn2−xMexFe16O27 (Me = Fe, Ni, Co, Cu, Mn) W-Type Hexagonal Ferrites

open access: yesApplied Sciences
W-type hexaferrites with compositions Ba0.5Sr0.5Zn2-xMexFe16O27 (Me = Fe, Ni, Co, Cu, Mn; x = 1) and Ba0.5Sr0.5Zn2−xMnxFe16O27 (x = 0–2.0) were synthesized via solid-state reaction and optimized using a two-step calcination process to obtain single-phase
Jae-Hee Heo, Young-Min Kang
doaj   +1 more source

Temperature dependence of spin resonance in cobalt substituted NiZnCu ferrites

open access: yes, 2010
Cobalt substitutions were investigated in Ni0.4Zn0.4Cu0.2Fe2O4 ferrites, initial complex permeability was then measured from 1 MHz to 1 GHz. It appears that cobalt substitution led to a decrease in the permeability and an increase in the \mus\timesfr ...
Labouré, Eric   +3 more
core   +5 more sources

Improvement in Structural Dielectric and Magnetic Properties of Barium Hexaferrite Nanoparticles by Doping Zinc Ions for Microwave Absorption Application

open access: yesIEEE Access
Nanotechnology has become visible as one of the most climacteric and expeditiously advancing research areas. Scientific researchers have recently given a demonstration of keen and undivided attention in nanoparticles ferrites.
Abdul Karim, Iftikhar Hussain Gul
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

In silico simulation of reversible and irreversible swelling of mitochondria: The role of membrane rigidity [PDF]

open access: yes, 2020
Mitochondria have been widely accepted as the main source of ATP in the cell. The inner mitochondrial membrane (IMM) is important for the maintenance of ATP production and other functions of mitochondria.
Arieli   +48 more
core   +1 more source

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