Materials Literature
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Most of the literature accepts, despite many controversial results, that during oxidation/reduction films of conducting polymers (CPs) move from electronic conductors to insulators. Thus, engineers and device's designers are forced to use metallic supports to reoxidize the material for reversible device work. Electroc…
The coupling between Eu(3+) rare earth emitters and Al has been investigated in multilayer structures, which consist of an Eu:Y2O3 phosphor film deposited between percolated and continuous Al films. Passive buffer Y2O3 layers were deposited between phosphor and Al films with different thicknesses to analyze the role o…
Several established and very general methods for calculating the absolute Helmholtz free energy from Monte Carlo simulations are compared, namely the method of Schilling and Schmid, Speedy's method and the self-referential method of Sweatman et al., and an approach inspired by the phase-switch method of Wilding et al.…
Effect of polymer concentration on self-focusing effect in oligothiophene-doped polymer-stabilized liquid crystals, Effect of polymer concentration on self-focusing effect in oligothiophene-doped polymer-stabilized liquid crystals
To develop better functional nanomaterials, photoluminescent (PL) transparent poly(vinyl butyral) (PVB) nanocomposite thin films containing carbon dots (CDs) were fabricated by a simple solution blending method. The PL CDs with mean diameters of about 5 nm were synthesized by a chemical oxidation method and were then…
Subnanometer-resolved local electron energy structure was measured in PbS quantum dot superlattice arrays using valence electron energy loss spectroscopy with scanning transmission electron microscopy. We found smaller values of the lowest available transition energies and an increased density of electronic states in…
Design of thermoelectric materials focuses on the optimization of several unfavorably coupled factors: electrical conductivity, Seebeck coefficient, and thermal conductivity. Recent work in thermoelectrics has focused on decreasing lattice thermal conductivity by nanostructuring thermoelectric materials, while recent…
Abstract Yttrium‐doped barium zirconate (BZY) thin films were deposited on MgO and sapphire substrates using a pulsed‐laser deposition (PLD) method with varying deposition rates. The films deposited with a low deposition rate exhibited highly oriented microstructures with little grain boundaries. The electrical conduc…
Starch/poly(vinyl alcohol)/montmorillonite (MMT) nanocomposites were prepared in a twin-screw extruder for food packaging film application. In order to obtain a better compatibility between starch and silicate layers, MMT modification was performed using citric acid. X-ray diffraction (XRD) analysis was used to charac…
Tailoring electrical and thermal contact conductivities (Σc and Γc) across metallized pnictogen chalcogenide interfaces is key for realizing efficient thermoelectric devices. The authors report that Cu, Ni, Ti, and Ta diffusion and interfacial telluride formation with n-Bi2Te3 and p-Sb2Te3 influence both Σc and Γc. Cu…
Postfunctionalizable hyperbranched polyurea coatings were prepared by the bulk polycondensation of AB2 monomers on preactivated silicon substrates. As previously shown, AB2 monomers were prepared, comprising a secondary amino group (A) and two blocked isocyanates (B) connected by hexyl spacers, in a single step and in…
A small series of partially alkylated bisindolylmaleimide dyes were prepared containing NO2 groups at the ortho, meta, and para position. The effect of substitution position in the aryl ring on the photophysical properties of the dyes is discussed in detail. The highly electron withdrawing NO2 makes different emission…
The structure of diamond-like carbon (DLC) films is usually described as a local blend of sp 2 and sp 3 bonds. However, we report heterogeneities in the elastic properties that suggest that the structure is better represented by sp 2 -rich and sp 3 -rich domains of about 20 nm diameter. The characterization was perfor…
Nonpolar oriented Na-doped ZnO films were grown on m-plane sapphire substrates by plasma-assisted molecular beam epitaxy. The films show repeatable p-type conductivity with a hole concentration of about 3.0×10(16) cm(-3) as identified by the Hall-effect measurements. 10-fold enhancement in the near-band-edge (NBE) emi…
Abstract The strategies adopted in Russia for a closed nuclear fuel cycle with fast reactors (FR), selection of fuel type and recycling technologies of spent nuclear fuel (SNF) are discussed. It is shown that one of the possible technological solutions for the closing of a fuel cycle could be the combination of pyroel…
Carbon nanofibers (CNFs) are surface‐modified by plasma polymerization using ethylene as monomer. The modified CNFs are suitable to be mixed with different polyethylenes. In this study, we mix them with high density polyethylene (HDPE). The plasma‐coated CNFs (pCNFs) are then characterized by Infrared Spectroscopy (FT…
The ability to pattern the seeding of nanodiamonds (NDs), and thus selectively control areas of diamond growth, is a useful capability for many applications, including photonics, microelectromechanical systems (MEMS) prototyping, and biomaterial design. A microprinting technique using a computer-driven micropipette ha…
Interacting particles confined in a quasi-one-dimensional channel are physical systems which display various equilibrium patterns according to the interparticle interaction and the transverse confinement potential. Depending on the confinement, the particles may be distributed along a straight line, in a staggered row…
Diffusion in bidisperse Brownian hard-sphere suspensions is studied by Stokesian Dynamics (SD) computer simulations and a semi-analytical theoretical scheme for colloidal short-time dynamics, based on Beenakker and Mazur's method [Physica A 120, 388-410 (1983); 126, 349-370 (1984)]. Two species of hard spheres are sus…
To overcome the large linewidth in the transmission spectra of metamaterials which have been applied in fields such as bio-sensing and light modulating in terahertz regime, a set of terahertz metamaterials which are composed of two different split ring resonators are designed and fabricated to explore the characterist…