Results 31 to 40 of about 6,028,445 (291)

Broadening the Bandwidth of Epsilon-Near-Zero Metamaterials with Embedded Square Frames

open access: yesPhotonics
A narrow frequency bandwidth of epsilon-near-zero metamaterials limits the use of many optical, microwave, and electronic devices. In this paper, we propose a recipe to broaden the operational bandwidth by employing a structure of properly tailored ...
Anatoliy V. Goncharenko   +1 more
doaj   +1 more source

Effective conductivity of conduit networks with random conductivities

open access: yesPhysical Review E
The effective conductivity ($T^{eff}$) of 2D and 3D Random Resistor Networks (RRNs) with random edge conductivity are studied. The combined influence of geometrical disorder, which controls the overall connectivity of the medium, and leads to percolation effects, and conductivity randomness is investigated.
Iván Colecchio   +2 more
openaire   +4 more sources

The effective conductivity of random checkerboards [PDF]

open access: yesJournal of Computational Physics, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Embroidered Transmission Lines with Conductive Yarns: Challenges, Modeling, Fabrication, and Experimental Performance Assessment

open access: yesSensors
This paper presents an enhanced measurement technique for evaluating embroidered transmission lines (TLs), based on a TL characterization method. The evaluation metric is the “pure” losses of the embroidered TL excluding mismatch losses.
Chrysanthi Angelaki   +3 more
doaj   +1 more source

Effective medium approximation for conductivity of coated-inclusion composites with anisotropic coating

open access: yesVietnam Journal of Mechanics, 2019
Effective medium approximations are constructed in this paper to estimate the macroscopic conductivity of coated-inclusion composites with thin anisotropic coating.
Tran Bao Viet   +2 more
doaj   +1 more source

Effective thermal conductivity of an intact heterogeneous limestone

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2020
The Cobourg limestone is a very low porosity rock consisting of lighter nodular regions that are predominantly calcite and darker regions consisting of calcite, quartz, dolomite, and an appreciable clay fraction.
A.P.S. Selvadurai, S.M. Rezaei Niya
doaj   +1 more source

A Geometry-Driven Modeling Framework for Matrix–Filler Interactions Governing Dielectric Response and Electrical Conductivity in Composite Materials

open access: yesIEEE Access
The interaction between filler and matrix materials in a composite structure significantly influences the effective performance of electronic devices employed in capacitive and resistive applications.
Kiran Keshyagol   +3 more
doaj   +1 more source

Effective conductivity of 2D disk – ring composite material

open access: yesMathematical Modelling and Analysis, 2013
For 2D bounded composite material geometrically composed by a disk of variable radius r and an outer ring it is determined in an analytic form the x-component of the effective conductivity tensor.
Serhii Gryshchuk, Sergei Rogosin
doaj   +1 more source

Effect of solid thermal conductivity and particle-particle contact on effective thermodiffusion coefficient in porous media [PDF]

open access: yes, 2011
Transient mass transfer associated to a thermal gradient through a saturated porous medium is studied experimentally and theoretically to determine the effect of solid thermal conductivity and particle-particle contact on thermodiffusion processes.
Davarzani, Hossein   +5 more
core   +1 more source

Numerical Assessment of Elliptical Pore Orientation and Eccentricity Effects on Charge Transport in Anisotropic Functional Membranes

open access: yesMembranes
The transport efficiency of anisotropic functional membranes is largely dictated by the geometry and orientation of their internal pores. In this study, a numerical finite-volume framework was developed to evaluate how elliptical pore eccentricity (εcc ...
Carlos Pacheco   +3 more
doaj   +1 more source

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