Materials Literature
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The formulation of an effective combined electrolyte for anodizing and copper plating of aluminum and its alloys, characterized by decreased concentration of harmful components (sulfuric acid, copper sulfate), was developed. To obtain copper deposits of finely crystalline structure, introduction of fluorides into the…
The methanol dehydrogenation reaction has been studied over impregnated copper-containing catalysts. A silica-montmorillonite nanocomposite has been used as the support for these systems. The catalyst’s features were found to depend strongly on the distance of the interlayer spacing within the structure of montmorillo…
During PEMFC(Proton Exchange Membrane Fuel Cell) operation monitoring and diagnosis are important issues for reliability and durability. Stack defect can be followed by a critical cell voltage drop in the stack. One method for monitoring the cell voltage is CVM(Cell Voltage Monitoring), where all cells in the stack ar…
Abstract A clean and efficient process for producing hydrogen using renewable energy sources is an important requirement for a future Hydrogen Economy. The production of hydrogen from water and solar energy is attracting widespread attention. In particular, research is focused on novel materials, or improving existing…
Adv. Funct. Mater, 2014, 24, 3725 In the above article, Figure 2 showed an incorrect XRD spectrum for the sample 1:15, and Figure 5f showed an incorrect XRD spectrum for the sample 0.5Au-CdS. The corrected figures are given here. The authors apologize for the mistake and for any inconvenience caused.
Chemical grafting of Polyaniline (PAni) and chitosan (CS) as has been carried out with formaldehyde as grafting agent and ammonium persulfate as an initiator. For this reason aniline monomers were copolymerized with chitosan and were chemically polymerized. The synthesized copolymer was Characterized using Fourier tra…
The development and application of low-cost and high-performance fillers by the paper industry is one of the most interesting aspects of filler technology. A novel calcium silicate, a byproduct, known as fly ashbased calcium silicate (FACS), from the value-added use of fly ash of coal-fired power plants, can be used a…
We developed a chemical mechanical polishing (CMP) simulator based on tight-binding quantum chemical molecular dynamics method and applied it to gallium nitride (GaN) CMP process. We successfully clarified the chemical reaction dynamics at the friction interface between the GaN substrate and an abrasive grain in pure…
Amorphous FeSiBC film with large magnetostriction and small magnetocrystalline anisotropy was deposited on the poled (110)-oriented Pb(Mg,Nb)O3-PbTiO3crystal substrate to form ferromagnetic/ferroelectric (FM/FE) heterostructures. It is shown that large in-plane uniaxial magnetic anisotropy (IPUMA)(>250 Oe) can be indu…
Large self-biased converse magnetoelectric effects (CME) are characterized in a multiferroic composite consisting of a magnetostrictive Terfenol-D (Tb0.3Dy0.7Fe1.92) plate, a piezoelectric single crystal 0.67PMN-0.33PT [0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3] plate and Fe-based amorphous alloy FeSiB foils. For the purpose of…
A comparative study on methanol sensing performance of ZnO nanoflowers and nanorods is reported in this paper. Chemical bath deposition technique was employed to develop both the nanostructures on a sol-gel grown seed layer deposited SiO2substrate. 0.1(M) ZnCl2with 0.3(M) NH3solution (about 25%) used for synthesis of…
Magnetostrictive behaviors of Fe-Si single-crystal hlms are investigated under rotating magnetic helds up to 1.2 kOe. The output waveform of (001) film is triangular, and that of (110) film is bathtub-like, while a (111) film shows very small variation with respect to the angle of the applied magnetic held. The wavefo…
The magnetic capture and manipulation of metallic nanoparticles can be interesting for many small-scale synthetic reactions, e.g., in the area of fine chemical production. Here, the separation of colloidal platinum nanoparticles from solution by means of magnetic beads is investigated. Therefore, magnetic beads functi…
Highly ordered arrays of Ni nanowires (NWs) and nanotubes (NTs) were electrodeposited into porous anodic alumina templates with 200 nm pore diameter. The geometrical parameters of the NW/NT arrays were tuned by the deposition conditions. The fabricated NWs and NTs had various lengths depending upon deposition time and…
Ni-rich and Mn-rich Ni–Mn–Sn Heusler alloys have been prepared and studied to find out their magnetocaloric properties. The martensitic transition temperature decreases for Ni-rich and increases for Mn-rich alloys with the increase of their respective rich element. The value of isothermal magnetic entropy change is al…
The magnetic and structural properties of bulk, ball-milled La(Co5-xFex), and ball-milled La2(Co7-xFex) were studied. The highest coercivity (1.08 T) was obtained at room temperature for ball-milled LaCo4.8Fe0.2after annealing in a preheated furnace at 800 °C for 3 min and subsequently quenching. Iron doping up to x =…
Based on the generalized gradient approximation (GGA) in density functional theory (DFT) and using the first-principle plane wave ultrasoft pseudopotential method, we construct and optimize the structures of intrinsic and oxygen vacancy (V O ) ZnO bulks and nanowires (NWs) in the Castep module. Moreover, the calculati…
CoxPt100-x(at. %) alloy epitaxial films with the close-packed plane parallel to the substrate surface are prepared on MgO(111) substrates heated at 300 °C by varying the Co content of x from 0 to 100. The stacking sequence of close-packed plane (the volume ratios of fcc and hcp crystals, Vfccand Vhcp) and the order de…
We numerically investigate the transmission properties of a subwavelength composite hole-pillar array. As the radius of the pillar increases, the transmission properties experience a complex evolution. It is found that the magnetic dipole resonance of the pillar suppresses the surface plasmon polariton resonance (SPPR…
The development of ultra-wideband composite absorbers of electromagnetic waves depends largely on finding the best combination of a medium’s characteristics that determine its absorption capacity. It is possible to achieve a higher level of absorption in a wider frequency band by combining a variety of mechanisms that…