Materials Literature
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Abstract Electrospun polyamide 11 (PA11) nanofiber films are used as a guide for the deposition of two‐dimensional networks of multi‐walled carbon nanotubes (MWNTs). This method allows for the manufacturing of transparent and electrically conductive thin films. It is demonstrated that the sheet resistance (Rs) and tra…
Using first principles calculations, we investigate the electronic properties of boron nanoribbons. The boron nanoribbons are constructed from the stable boron sheet. The bare boron nanoribbons with different edges are metals. The boron nanoribbons with two-hydrogen passivated on the zigzag edges become semiconductors…
In this work, Zn, Al, Pt, Ag, and Au nonmagnetic metallic films were deposited on the surface of ZnO film, followed by high vacuum annealing at different temperatures. Results showed that (Zn,Al,Pt)∕ZnO films possessed room temperature ferromagnetism (RTF) after the vacuum annealing, while (Ag,Au)∕ZnO films did not. O…
We deposited (112¯0) nonpolar a-plane ZnO (a-ZnO) films on (011¯2) r-sapphire substrates using metalorganic chemical vapor deposition. Unit cell deformation due to interfacial strain in films was determined by triple-axis x-ray diffraction. Due to low symmetry of a-plane, anisotropic strain is observed along the [0001…
Lasers are widely used for macro- and micromachining applications in numerous industries such as automotive, electronics, and medical manufacturing. However, there are many challenges encountered in the utilization of lasers for nanomachining. The most critical requirement is that the diffraction limit of laser light…
Abstract Six new thioantimonates(III) with the [Sb 4 S 7 ] 2− anion were obtained under solvothermal conditions with in‐situ formed transition metal complexes as structure directors. In the two isostructural compounds [Fe(dien) 2 ]Sb 4 S 7 ·H 2 O ( 1 ) and [Co(dien) 2 ]Sb 4 S 7 ·0.5 H 2 O ( 2 ) (dien = diethylenetriam…
We employ a first-principles total-energy method to investigate the theoretical tensile and shear strengths of fcc Ni systematically. The theoretical tensile strengths are shown to be 36.1, 10.5 and 34.1 GPa in the [001], [110] and [111] directions, respectively. We indicate that [110] is the weakest direction due to…
We study the E-T phase diagram and dynamical pyroelectric coefficient of an (001)-oriented flux-grown 0.8Pb(Mg1/3Nb2/3)O3–0.2PbTiO3 single crystal. We found that the highest pyroelectric coefficient can be achieved at the point having quasicritical features. These data establish a quasicritical behavior of the field-i…
In this paper, the Co1−xNixSb3+y system (x=0.1,0.2; y=0, 0.05) has been prepared by direct current induced hot press and annealing. Pores were made by annealing pressed Co1−xNixSb3.05 pellets into Co1−xNixSb3 pellets during annealing. It was found that from room temperature to 500°C, the pores with diameter larger tha…
A screening method is reported for electro-optic (EO) polymers with an emphasis on broadband device suitability. The method is based on comparing the signal from second harmonic generation (SHG) and the leak through current (LTC) during poling. Plots of the SHG and LTC are used to define high EO activity-low current p…
The microstructure of ball milled Fe powder as a function of the milling time has been investigated using room temperature x-ray powder diffraction and transmission electron microscopy. The powder microstructure changes when the milling time increases in a twofold way: (i) a reduction of the crystalline grain size to…
We derive semiclassical quantization equations for graphene monolayer and bilayer systems where the excitations are confined by the applied inhomogeneous magnetic field. The importance of a semiclassical phase, a consequence of the spinor nature of the excitations, is pointed out. The semiclassical eigenenergies show…
A finite element approach is suggested for the modeling of the dynamics of multivariant martensitic phase transitions (PTs) in elastic materials at the nanoscale in the three dimensional (3D) case. The model consists of a coupled system of the Ginzburg–Landau equations for transformation strain-related order parameter…
Abstract Silicone rubber (SR) foams were prepared by the peroxide curing of a silicone compound with 2,4‐dichlorobenzoyl peroxide (DCBP), di‐ t ‐butyl peroxide (DTBP), or 2,5‐dimethyl‐2,5‐di( t ‐butylperoxy) hexane (DBPH) in the presence of 2,2′‐azobisisobutyronitrile (AIBN) as a blowing agent. The cells were formed i…
Interactions between the anticancer drug quercetin and biodegradable polyesters within micelles were investigated by DSC, WAXD, and UV analyses. For micelles based on poly(ethylene glycol) methyl ether-block-poly(epsilon-caprolactone) (MPEG-PCL), DSC analysis indicated that the interactions were between the hydrophobi…
Pt@CoAl2O4 inorganic nanopeapods (see picture) consisting of well-defined Pt nanoparticle chains embedded in CoAl2O4 are synthesized by the pulsed electrodeposition of Co/Pt multilayered nanowires into an anodic aluminum oxide (AAO) membrane and a subsequent high-temperature solid-state reaction between Co/Pt nanowire…
Abstract The interaction of nitrogen, oxygen, and hydrogen plasmas with spin‐coated arrays of colloidal cobalt–platinum particles was investigated with a large variety of microscopic and spectroscopic techniques. It could be demonstrated that the organic ligands of the nanoparticles can be completely removed. Yet, due…
In situ tensile straining transmission electron microscopy investigation of electrodeposited copper with high density of nanoscale growth twins reveals that twin boundaries (TBs) can serve as dislocation sources. Atomic steps at TBs formed by sessile Frank partial dislocations are beneficial for TBs serving as disloca…
BACKGROUND: The present study investigated the effect of chitosan seed priming on the induction of disease resistance in pearl millet against downy mildew disease caused by Sclerospora graminicola (Sacc.) Schroet. RESULTS: Pearl millet seeds were primed with chitosan at different concentrations: 0.5, 1.5, 2.5 and 3 g…
We report on an interesting formulation of a phase-field model which incorporates a description of individual phases and particles with preserved volume evolving in a system of multiple phases such that the interfacial energy decreases. In our model, an antiforcing free energy density is defined to fulfill constraints…