Materials Literature
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Abstract Low‐temperature plasticity is a deformation mechanism that occurs mainly at high stress and low temperatures and may be important in the shallow lithosphere, at the tips of cracks, and in laboratory experiments. Previous studies investigating the low‐temperature plasticity of the mineral olivine have exhibite…
Abstract We describe a systematic method for the preparation and spectroscopic characterization of a CO2 molecule coordinated to an activated bisphenoidal nickel(I) compound containing a tetraazamacrocyclic ligand in the gas phase. The resulting complex was then structurally characterized by using mass‐selected vibrat…
${\mathrm{CeOs}}_{2}{\mathrm{Al}}_{10}$ exhibits Kondo semiconducting properties, yet orders antiferromagnetically at a rather high temperature, ${T}_{\mathrm{N}}=28.5$ K. We have performed break-junction tunneling measurements on single crystals of ${\mathrm{CeOs}}_{2}{\mathrm{Al}}_{10}$ and the nonmagnetic Kondo sem…
Some of new azo dyes with different anchoring groups, such as biscarbodithiolic acid, hydroxamic acid, phosphonic acid, carboxcylic acid and sulfonic acid have been investigated theoretically to evaluate the effects of various anchoring groups on the optical and electronic properties of the dyes in dye-sensitised sola…
Polymer nanocomposite was prepared using poly(vinylidene fluoride-trifluoroethylene) and zinc oxide (ZnO) nanopowder, which are ferroelectric in nature. Nanocomposite was prepared in various concentrations(0.2, 0.4, 0.8, and 1 wt. %) using probe ultra-sonication, followed by spin coating and annealing at 120 °C for 2…
Structural aspects and fluorescence behaviors of a series of cocrystals of hydroxyaromatic aldoximes, namely, 2(H 2 NAP)·(4,4′-bipyridine), 2(H 2 NAP)·(HMTA), H 2 NAP·caffeine, and (H 3 OHPA)·theophylline·2H 2 O, where H 3 OHPA = 2,3-dihydroxyphenylaldoxime, H 2 NAP = 2-hydroxynaphthaldoxime, HMTA = hexamethylenetetra…
Nanostructured semiconductors have a clear potential for improved optoelectronic devices, such as high-efficiency light-emitting diodes (LEDs). However, most arrays of semiconductor nanorods suffer from having relatively low densities (or "fill factors") and a high degree of nonuniformity, especially when produced by…
Carbon-free Cu2ZnSnS4 (CZTS) thin films were prepared via a simple spin-coating process based on a sol–gel precursor of methoxyethanol solution with metal salts and thiourea, followed by post-sulfurization. The sol–gel precursor solution was deposited onto molybdenum-coated glass substrates. The sulfurization process…
Sulfur-doped SnO2 nanoparticles with ultrafine sizes have been successfully prepared by a one-pot hydrothermal method. The obtained samples are characterized by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy…
We develop a microscopic and gauge-invariant theory for collective modes resulting from the phase of the superconducting order parameter in noncentrosymmetric superconductors. Considering various crystal symmetries, we derive the corresponding gauge mode ω_{G}(q) and find, in particular, new Leggett modes ω_{L}(q) wit…
Experimental investigations are performed on the fabrication and optimization of micro-scale speckle patterns formed by spinning an epoxy resin and powder for digital image correlation measurements. New factors influencing the fabrication process, including the ambient temperature, centrifugal velocity, and solidifyin…
A tri-color composite volume holographic polymer dispersed liquid crystal (H-PDLC) grating and its application to 3-dimensional (3D) color autostereoscopic display are reported in this paper. The composite volume H-PDLC grating consists of three different period volume H-PDLC sub-gratings. The longer period diffracts…
We intensively investigate the physical principles regulating the tunneling magneto-resistance (TMR) and perpendicular magnetic anisotropy (PMA) of the CoFeB/MgO magnetic tunnel junction (MTJ) by means of angle-resolved x-ray magnetic spectroscopy. The angle-resolved capability was easily achieved, and it provided gre…
A number of Al 5xxx alloys were aged at constant temperatures (40, 50, 60, 70°C) and cyclic temperatures (40 to 45, 30 to 70, 50 to 70°C) for as long as 57.5 months. ASTM G67 nitric acid mass loss test (NAMLT) results of Al 5050-H32, 5052-H32, 5154-H32, 5083-H116, 5083-H131, and 5456-H116 alloys were obtained to evalu…
High-boiling-point solvent additives, employed during the solution processing of active-layer formulations, impact the efficiency of bulk heterojunction (BHJ) organic solar cells by influencing the morphological/topological features of the multicomponent thin film. Here, we aim at a better understanding of how these a…
Abstract Bipolar electrochemistry is employed to demonstrate the formation of gold nanoparticle size gradients on planar surfaces. By controlling the electric field in a HAuCl4‐containing electrolyte, gold was reduced onto 10 nm diameter particles immobilized on pre‐modified thiolated bipolar electrode (BPE) templates…
Tetracyanide molecules such as tetracyanoethylene (TCNE) and tetracyaniquinodimethane (TCNQ) have been proposed as promising candidate materials for organic battery electrodes, including lithium ion as well as sodium ion batteries. Their high theoretical capacities are in particular due to the possibility to store mor…
Hybrid perovskite solar cell is a fast‐growing photovoltaic technology. Here, we present a method based on the closed space vapor transport deposition, which has the potential for large‐scale production due to its low cost, high throughput, and large‐area uniformity. We demonstrate CH3NH3PbI3 solar cells with high pow…
This letter develops a systematic approach to quantitatively evaluate and compare LiFePO4battery cycle life improvement using ultracapacitors (UCs). The impact of UC sizing on temperature rise, capacity loss, and power fade under a real dynamic load profile is included for a comprehensive discussion and evaluation. It…
Comprehensive understanding of biomass solubilization chemistry in aqueous pretreatment such as water-only and dilute acid flowthrough pretreatment is of fundamental importance to achieve the goal of valorizing biomass to fermentable sugars and lignin for biofuels production. In this study, poplar wood was flowthrough…