Materials Literature
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Carbon nanotube (CNT)- and graphene (G)-based transparent conductive films (TCFs) are two promising alternatives for commonly-used indium tin oxide-based TCFs for future flexible optoelectronic devices. This review comprehensively summarizes recent progress in the fabrication, properties, modification, patterning, and…
We present the syntheses, structural characterization, gas sorption, I2 uptake, and magnetic properties of a double-walled porous metal-organic framework, [Co(II)3(lac)2(pybz)2]·3DMF (1·3DMF, purple, where pybz = 4-pyridyl benzoate, lac = d- and l-lactate) and of its post-synthetic modified (PSM) congeners, [Co(II)3(l…
Until recently, “room-temperature” (<100–150 °C) liquid-state electrochemistry was mostly electrochemistry of diluted electrolytes(1)–(4) where dissolved salt ions were surrounded by a considerable amount of solvent molecules. Highly concentrated liquid electrolytes were mostly considered in the narrow (albeit importa…
Abstract Unconventional oil and gas exploration has created ever-greater demands on milling technology as wells have gone deeper and the number of frac zones has increased. A new cutting element has been developed that can mill up to double the previous number of composite plugs or frac seats, allowing most wells to b…
Abstract With the increasing demand of gas worldwide, some highly sour oil and gas reservoirs have been explored in Russia, Middle East, China and North America. The development of such fields, which contain a high percentage of sour gas, represents significant technical challenges regarding drill pipe integrity and o…
We propose a model of an equivalent electrical circuit specifically designed for a ferrite inductor excited by a sinusoidal waveform. The purpose of this model is its use in a circuit simulator. We calculate the model parameters by means of Finite Elements in 2D which leads to significant computational advantages over…
The aim of this work is to describe the resistance of ultra high performance fibre reinforced concrete (UHPFRC) to projectile impact. The main goal is to find an optimum fibre content in the UHPFRC mixture with respect to the resistance to projectile impact, strength and workability. In addition, the authors describe…
An alternative wet deposition process of thin group-IV films is demonstrated under the hot electron injection into solutions. A nanocrystalline silicon (nc-Si) device, composed of a thin Au/Ti film, an anodized nc-Si layer, and an n + -Si substrate, operates as a surface-emitting cold cathode in SiCl 4 and GeCl 4 solu…
High resolution electron microscopy, electron diffraction and electron holography were used to study individual free-standing ∼ 30 nm barium titanate nanocrystals. Large unidirectional variations in the tetragonal distortion were mapped across the smaller nanocrystals, peaking to anomalously large values of up to 4% a…
The RSM introduces statistically designed experiments for the purpose of making inferences from data. The second-order model is the most frequently used approximating polynomial model in RSM. The most common designs for the second-order model are the 3<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><m…
In this study, the effect of several parameters, including composition, order of mixing, viscosity, and interfacial tension, on the phase structure and size of dispersed particles of polyamide 6 (PA6)/poly(styrene-co-acrylonitrile) SAN/poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) ternary blends was investig…
Optimally doped iron-chalcogenide superconductor Fe1.03Se0.5Te0.5 has been investigated under high pressures using synchrotron-based x-ray diffraction and mid-infrared reflectance measurements at room temperature. The superconducting transition temperature (Tc) of the same sample has been determined by temperature-dep…
Using molecular dynamics simulations with semi-empirical potentials, we demonstrate a method to fabricate carbon nanotubes (CNTs) from graphene nanoribbons (GNRs), by periodically inserting appropriate structural defects into the GNR crystal structure. We have found that various defect types initiate the bending of GN…
Chiral sulfinamides including t-butanesulfinamide and p-toluenesulfinamide are important and versatile reagents that have extensive applications in asymmetric synthesis and catalysis, and in the sy...
An overarching mathematical framework is proposed to describe entire mineral particle precipitation processes, including multiple polymorphic forms and ranges of temperatures. While existing models portray individual physical phenomena, the presented approach incorporates a diverse set of the physical phenomena simult…
In this work the growth and field emission properties of vertically aligned and spatially ordered and unordered ZnO nanowires are studied. Spatially ordered nanowire arrays of controlled array density are synthesized by both chemical bath deposition and vapour phase transport using an inverse nanosphere lithography te…
Polyoxomolybdate inorganic-organic hybrid crystals were synthesized with 1-decyl-3-methylimidazolium and 1-dodecyl-3-methylimidazolium as ionic-liquid surfactants. Both hybrid crystals possessed alternate stacking of surfactant layers and octamolybdate (Mo8) monolayers, while the molecular structures of Mo8 were diffe…
In order to simulate the real condition of a ship sailing in seawater, a cavitation apparatus of ultrasonic excitation was set up with variable temperature field and self-vibration of a Q235 steel sample. The sample self-vibration in a cavitation environment was firstly measured and its erosion–corrosion behaviors at…
La 2– x Sr x NiMn 1– x Sb x O 6 ( x = 0, 0.08, 0.3) ceramics were prepared by a gel combustion method. Structural, dielectric, and dielectric tunable properties were systematically investigated. A phase transition from mixed monoclinic and rhombohedral phases to monoclinic phase occurs as Sr and Sb contents increase.…
We have synthesized the Ba2−xSrxCo2Fe12O22 samples (x = 0.1, 0.2, 0.3, 0.4, 0.5) by the solid-state reaction method and investigated their crystalline and magnetic properties by X-ray diffractometer (XRD), Mössbauer spectrometer, vibrating sample magnetometer, and network analyzer. XRD patterns show that all samples a…