Results 31 to 40 of about 1,415,406 (299)

The tunable permittivity of multi-walled carbon nanotubes/silver nanoparticles reinforced polyvinyl alcohol (PVA) nanocomposites at low frequency

open access: yesMaterials Research Express, 2018
This paper is about tailoring high permittivity of multi-walled carbon nanotubes/silver nanoparticles (MWNT-AgNP) filled polyvinyl alcohol (PVA) nanocomposites at low frequency. PVA/MWNT-AgNP nanocomposites were synthesized via solution-casting technique
Yusliza Yusof   +3 more
doaj   +1 more source

Rheological and dielectric properties of different gold nanoparticle sizes

open access: yesLipids in Health and Disease, 2011
Background Gold nanoparticles (GNPs) have found themselves useful for diagnostic, drug delivery and biomedicine applications, but one of the important concerns is about their safety in clinical applications.
Abdelhalim Mohamed Anwar K   +2 more
doaj   +1 more source

Nonmonotonic (in concentration) conductivity of aqueous solutions of fungal melanin

open access: yesSemiconductor Physics, Quantum Electronics & Optoelectronics, 2018
The conductivity of aqueous (distilled and natural water) solutions of fungal melanin (purified and non-purified) has been studied. It has been shown that, in the presence of impurities, the conductivity of solution increases (for the concentration 0.1 ...
O.V. Kovalchuk, T.M. Kovalchuk
doaj   +1 more source

Electrical conductivity improvement of aeronautical carbon fiber reinforced polyepoxy composites by insertion of carbon nanotubes [PDF]

open access: yes, 2012
An increase and homogenization of electrical conductivity is essential in epoxy carbon fiber laminar aeronautical composites. Dynamic conductivity measurements have shown a very poor transversal conductivity.
Dantras, Eric   +3 more
core   +2 more sources

Processing and characterization of CaTiO3 perovskite ceramics [PDF]

open access: yesProcessing and Application of Ceramics, 2014
Calcium titanate (CaTiO3) ceramics with perovskite structure were produced by solid state reaction. Calcium carbonate (CaCO3) and titanium dioxide (TiO2) were mixed (in molar ratios 1/1 and 3/2), and the obtained mixtures were calcined at 1150 °C in ...
Guilherme Gralik   +4 more
doaj   +1 more source

Dyadic Green's Functions and Guided Surface Waves for a Surface Conductivity Model of Graphene

open access: yes, 2008
An exact solution is obtained for the electromagnetic field due to an electric current in the presence of a surface conductivity model of graphene. The graphene is represented by an infinitesimally-thin, local and isotropic two-sided conductivity surface.
Chew W. C.   +3 more
core   +2 more sources

Dielectric properties of deformed early potatoes

open access: yesResearch in Agricultural Engineering, 2008
The permittivity of potato tissue was studied during uniaxial compression of cylindrical specimens prepared from two early varieties. Both the real and the imaginary permitivity components were determined repeatedly during the loading and unloading tests.
J. Blahovec
doaj   +1 more source

Universal thermal and electrical conductivity from holography

open access: yes, 2010
It is known from earlier work of Iqbal, Liu (arXiv:0809.3808) that the boundary transport coefficients such as electrical conductivity (at vanishing chemical potential), shear viscosity etc.
B Hassanain   +32 more
core   +1 more source

Integration of sensors for dam water quality analysis – a prototype

open access: yesWater Science and Technology, 2021
Water consumed is stored in several water bodies in and around us, out of which dams accommodate a major portion of water. The quantity and quality monitoring of water in dams is troublesome due to their large surface area and high depths.
Lina Rose, X. Anitha Mary, C. Karthik
doaj   +1 more source

Anisotropic conductivity of doped graphene due to short-range non-symmetric scattering

open access: yes, 2010
The conductivity of doped graphene is considered taking into account scattering by short-range nonsymmetric defects, when the longitudinal and transverse components of conductivity tensor appear to be different.
F. T. Vasko, Nye J. F.
core   +1 more source

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