Materials Literature
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By calculation of a thermodynamic phase diagram we provide an atomistic understanding of the morphological changes in ZnO-supported Cu nanocatalysts, which are subject to strong metal-support interactions, in response to the redox properties of the surrounding gas phase, i.e., depending on temperature and pressure. Th…
The efficiency of three complex surfactants based on sunflower oil and nitrogen containing compounds as corrosion inhibitors for mild steel in <TEX>$CO_2$</TEX>-saturated 1% NaCl solution, has been determined by weight loss and LPR corrosion rate measurements. These compounds inhibit corrosion even at very low concent…
Propane nonoxidative and oxidative dehydrogenation reactions were investigated over bimetallic alumina supported Mo–Ni catalyst in a quartz fixed-bed reactor at 0.1 MPa within the temperature range of 773–973 K. Time-on-stream analysis showed that Mo–Ni catalyst is stable at 4 h reaction time during ODH, while it sign…
Vertical carbon nanotube (CNT) forests bonded at room temperature with sprayed on nanoscale polymer coatings are found by measurement to produce thermal resistances that are on a par with those of conventional metallic solders. These results are achieved by reducing the high contact resistance at CNT tips, which has h…
We illustrate for a solid-liquid interface how local atomic order in a metallic melt (NiZr) transforms into a massive in-plane ordering at the surface of a crystal (bcc Zr) when commensurability is given between the solute-centered clusters of the melt and the periodic potential of the crystalline surface for a given…
Reported here is the first crystalline inorganic-organic hybrid material combining In, Ge, and Cu. The trimetallic system undergoes a nanoscale separation into small In-Ge-S supertetrahedral T2 clusters and large In-Cu-S T5 clusters, which are further assembled into a T2-T5 mixed layer. This material reveals the long-…
We have investigated the structural, magnetic, and ferroelectric properties of Mn-substituted CuFeO${}_{2}$, i.e., CuFe${}_{1\ensuremath{-}x}$Mn${}_{x}$O${}_{2}$ ($0\ensuremath{\le}x\ensuremath{\le}0.2$). CuFeO${}_{2}$ is a typical frustrated triangular lattice antiferromagnet due to its Fe${}^{3+}$ triangular configu…
The scanning electron microscope (SEM) has gone through a tremendous evolution to become a critical tool for many and diverse scientific and industrial applications. The high resolution of the SEM is especially suited for both qualitative and quantitative applications especially for nanotechnology and nanomanufacturin…
Frequency selective limiters (FSLs), which selectively attenuate above threshold signals while allowing low power signals to pass with little attenuation, have potential application in maintaining the dynamic range of RF receivers in the presence of interference. Stripline FSLs, fabricated using thick yttrium iron gar…
The authors report the growth of β-Ga2O3nanowires using a vapor phase transport method on SiO2/Si template. It is found that average diameter, average length, and density of the nanowires all increased as we increase the growth temperature. β-Ga2O3nanowire solar-blind photodetectors with a sharp cutoff at 255 nm are a…
Abstract Composites obtained from biodegradable polymers and natural–organic fillers are attracting increasing interest, thanks to the environmental advantages they promise. On the other hand, the real biodegradation performance of a biodegradable polymer/natural organic filler composite should be assessed by performi…
The perovskite structure La1−xSr(or Sm)xMnO3±δ (x = 0, 0.25) powders were successfully fabricated by the traditional solid state reaction method. The influences of Sr2+ or Sm3+ doping on the static and dynamic magnetic performance were investigated. The resonance phenomena could be attributed to natural resonance and…
Two new quaternary sodium tungsten selenites, Na2(WO3)3(SeO3)·2H2O (P31c) and Na6(W6O19)(SeO3)2 (C2), have been synthesized and characterized. The former exhibits a hexagonal tungsten oxide layered structure, whereas the latter has a one-dimensional "ribbon" structure. The layers and "ribbons" consist of distorted WO6…
Abstract This Minireview summarizes the fundamental results of a comparative inverse‐model versus real‐model catalyst approach toward methanol steam reforming (MSR) on the highly CO 2 ‐selective H 2 ‐reduced states of supported Pd/ZnO, Pd/Ga 2 O 3 , and Pd/In 2 O 3 catalysts. Our model approach was extended to the rel…
Equal channel angular pressing (ECAP) is a type of severe plastic deformation procedure for achieving ultra-fine grain structures. This article investigates artificial neural network (ANN) modeling of ECAP process based on experimental and three-dimensional (3D) finite element methods (FEM).In order to do so, an ECAP…
A limiting factor in assessing the risk of current and emerging nanomaterials in biological and environmental systems is the ability to accurately detect and characterize their size, shape, and composition in broad product distributions and complex media. Asymmetric flow field-flow fractionation (A4F) is capable of se…
The effect of pretreatment on indium-tin oxide (ITO) electrodes has been rarely studied, although that on metal and carbon electrodes has been enormously done. The electrochemical and surface properties of ITO electrodes are investigated after 6 different pretreatments. The electrochemical behaviors for oxygen reducti…
We have recently reported two superconductors with the \(d^{1}\) square lattice, BaTi2Sb2O (\(T_{\text{c}}=1.2\) K) and BaTi2Bi2O (\(T_{\text{c}}=4.6\) K). In order to find a clue behind the superconductivity of these materials, we synthesized isovalent solid solutions of BaTi2(As1-xSbx)2O and BaTi2(Sb1-yBiy)2O. Despi…
Understanding charge carrier transport mechanisms in graphene fabricated by chemical vapor deposition (CVD) is important for electronic and thermal applications. We report results of structural, low temperature resistivity, and thermopower measurements in approximately four atomic layer thick centimeter size graphene.…
S-trans, trans-farnesylthiosalicylic acid (FTS) is a synthetic small molecule that acts as a potent and especially nontoxic Ras antagonist. It inhibits both oncogenically activated Ras and growth factor receptor-mediated Ras activation, resulting in the inhibition of Ras-dependent tumor growth. In this work, an FTS co…