Materials Literature
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A method of controllable doping by ion irradiation in reduced graphene oxide (RGO) is presented, and the threshold voltage of the RGO-based field-effect transistor can be finely tuned in the range from more than 30 V to about −20 V using this approach. Evidence of doping was also provided by Raman spectroscopy and Fou…
Nematic and smectic liquid crystals were introduced into μm-scale gaps between plates coated with polymer films nanoimprinted with parallel arrays of rectangular channels. Overlaying the channels on the two plates close enough at a slight angle produces a mosaic of alternating planar and homeotropic alignments and hyb…
The effect of long-term fertilization and cropping on soil potassium (K)–supplying capacity has not been extensively studied. Five treatments [control, nitrogen (N), N–potassium (P), NPK, and NPK + manure (NPKM)] were used to evaluate the quantity and intensity relationship (Q/I) of K in black soil (Luvic Phaeozems so…
AIM: We aim to develop a facile strategy for assembling nanoparticles within cross-linked polymer micelles that enables tuning of their overall hydrodynamic size and surface charge and to mitigate toxicity. MATERIALS & METHODS: Hydrophobic nanoparticles and amphiphilic co-polymers self-assembled upon solvent-selective…
Purpose – The purpose of this paper is to synthesise cyclohexanone formaldehyde resin (CFR)‐modified carbazole‐9‐carbonyl chloride (CzCl) via hydroxyl groups of CFR. This carbazole‐modified resin (Cz‐CFR) comonomer was characterised by common techniques such as UV, NMR, FTIR, fluorescence spectrophotometer, and scanni…
Nonlinear optical molecules can be vacuum deposited into uniform thin films using thermal evaporation. Alignment order can be achieved during thin film deposition by an in-plane electrical field poling using electrodes patterned on the substrate. Electro-optic (EO) coefficients, r33 and r13 are independently measured…
The relationship between structure, thermal conductivity, and phonon propagation in low-, high- and very-high-density amorphous ices (LDA, HDA, and VHDA) at 30--180 K and over the pressure range from 0.1 to 1.1 GPa has been investigated with equilibrium molecular dynamics simulations employing the Green-Kubo approach…
Several variants of hydrated sodium cadmium bisulfate, Na 2 Cd 2 (SO 4 ) 3 ·3H 2 O, Na 2 Cd(SO 4 ) 2 ·2H 2 O, and Na 2 Cd(SO 4 ) 2 ·4H 2 O have been synthesized, and their thermal properties followed by phase transitions have been invesigated. The formation of these phases depends on the stochiometry and the time take…
In this paper, we study the morphological, chemical and electrochemical characteristics of conductive fabrics obtained by weaving conductive yarns of polyester chemically coated with PPy (polypyrrole)/PW 12 O 3- 40 . The weaving process allows us to obtain conductive fabrics with higher dimensions than those tradition…
By melting a mixture of high-purity oxides in a platinum crucible under flowing purified oxygen, we have prepared (TeO 2 ) 0.75 (WO 3 ) 0.25 glass with a total content of 3 d transition metals (Fe, Ni, Co, Cu, Mn, Cr, and V) within 0.4 ppm by weight, a concentration of scattering centers larger than 300 nm in size bel…
Abstract Magnesium fluoride (MgF 2 ) films are fabricated via low pressure metal‐organic (MO)CVD on glass or quartz substrates from the novel single‐source precursor Mg(hfa) 2 · 2H 2 O · 2diglyme. The nature and quality of films are scrutinized depending on relevant operational parameters, namely the deposition temper…
A detailed theoretical study of structural and magnetic behavior of iron, cobalt, and nickel along the trigonal transformation paths at various volumes per atom is presented. The total energies are calculated by a spin-polarized full-potential linearized augmented plane wave method within the generalized gradient appr…
Abstract 0.979K 0.5 Na 0.5 Nb 1‐ x Sb x O 3 ‐0.021Bi 0.5 Na 0.5 TiO 3 (KNNS x ‐BNT) lead‐free piezoelectric ceramics were fabricated by conventional solid state reaction technique, and their phase transition and electrical properties were studied. With the increase of x , the rhombohedral‐orthorhombic phase transition…
Alumina‐magnesia refractory castables present suitable performance during application in steel ladles due to the in situ spinel ( MgAl 2 O 4 ) formation. For the steel industry, an early generation of the spinel phase would be beneficial for the castable performance. Taking this aspect into account, alternatives to re…
The tunable magnetism at graphene edges with lengths of up to 48 unit cells is analyzed by an exact diagonalization technique. For this we use a generalized interacting one-dimensional model which can be tuned continuously from a limit describing graphene zigzag edge states with a ferromagnetic phase, to a limit equiv…
Gold glyconanoparticles were synthesized by a simple, rapid, and eco-friendly method by using sweet Sorghum syrup for application in biomedicine and biotechnology. The nanostructures of the prepared gold nanoparticles were confirmed by using UV-visible absorbance, TEM, SAED, FTIR, EDAX, XRD, and photoluminescence anal…
Abstract Ternary polar intermetallics Sm 117 Co 55.6 Sn 116 , Tb 117 Co 59 Sn 111 , and Dy 117 Co 58 Sn 111 were prepared by the arc‐melting technique. They belong to the Tb 117 Fe 52 Ge 112 structure type and are characterized by a giant cubic unit cell ( V > 25000 Å 3 ). The build‐up of the structure can be under…
Electronic components formed from electrically conductive textiles require a clear characterization of properties, such as electrical resistance, to enable the design and manufacture of safe and reliable electronic textile devices. The low dimensional stability of some electroactive fabrics can present challenges to e…
A novel approach is applied to fabricate highly crystalline hollow TiO 2 fibers with a uniform wall thickness. In this approach, first the polymer fibers of ̃240 nm in diameter were synthesized by the electro‐spinning technique as sacrificial templates. Second, TiO 2 shell layers of ̃75 nm in thickness were deposited…
Uniform and homogeneous coating of mesoporous materials with an active (catalytically, photonic, electrical) nanostructure can be very useful for a number of applications. Understanding chemical reactions in a confined space is important in order to design new advanced materials. In this work, we demonstrate that an e…