The prime objective of the present paper is to develop polymer electrolyte doped with salt. A solution cast technique was adopted a solid (Poly (methyl methacrylate) (PMMA) as host and salt potassium hydroxide, KOH dopant. Incorporation increases amophosity homogeneity, decreases surface roughness. Moreover, doping (KOH) overall conductivity film. Electrochemical impedance spectroscopy (EIS) re...

magnetic cofe2o4 nanoparticles were synthesized via a simple chemical reaction using precipitation method. the obtained materials consist of ferrite particles with average diameter of 25 nm. the effect of different surfactants such as cationic, anionic and neutral on the morphology of the products was investigated. scanning electron microscopy was used to study the structure and particle size o...

Following recent work of Halperin, Lee, and Read, and Kalmeyer and Zhang, a double-layer electron system with total Landau-level filling factor ν = 1/2 is mapped onto an equivalent system of fermions in zero average magnetic field interacting via a Chern-Simons gauge field. Within the random-phase approximation a new, low-lying, diffusive mode, not present in the ν = 1/2 single-layer system, is...

Large plasma potentials sup to ,80 Vd are measured upstream of a current-free electric double layer generated in a helicon rf argon discharge for a constant rf power of 250 W sat 13.56 MHzd and for low operating pressures s,2 mTorrd using an electrostatic ion energy analyzer. The energy of the Ar+ ion beam formed by acceleration through the potential drop of the double layer is found to be stro...

In the presented work, possibility of direct synthesis LDH (layered double hydroxide) on AZ91 surface in presence a chelating agent (diethylenetriaminepentaacetic acid - DTPA) is reported. Conversion layer nanocontainers were formed under ambient pressure conditions without carbonate addition electrolyte. The obtained was characterized using experimental (SEM, XRD, TGA, XPS, Raman, etc.) and co...

We study the ground state and the collective excitations of parabolicallyconfined double-layer quantum dot systems in a strong magnetic field. We identify parameter regimes where electrons form maximum density droplet states, quantum-dot analogs of the incompressible states of the bulk integer quantum Hall effect. In these regimes the Hartree-Fock approximation and the time-dependent Hartree-Fo...

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