Materials Literature
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Jute fiber/polyethylene biocomposites were prepared using a hot press molding technique. The effects of maleic anhydride, clay, and silica on the physical, mechanical, and thermal properties of jute fiber-reinforced polyethylene (PE) biocomposites with different fiber loadings (5, 10, 15, and 20 wt.%) were investigate…
Synchronous digitization, in which an optical sensor is probed synchronously with the firing of an ultrafast laser, was integrated into an optical imaging station for macromolecular crystal positioning prior to synchrotron X-ray diffraction. Using the synchronous digitization instrument, second-harmonic generation, tw…
To investigate the synergistic effects of fuel retention in tungsten, experiments were performed in the linear plasma device PSI-2 where the transient heat loads were applied by a high energy laser during the steady-state plasma operation. The impact on the deuterium (D) retention of simultaneous and sequential exposu…
The ferrimagnetic spinel ${\mathrm{Mn}}_{3}{\mathrm{O}}_{4}$ exhibits large and anisotropic changes in electronic and structural properties in response to an applied magnetic field. These changes are thought to result from the field-dependent tuning---via strong spin-lattice coupling---between two nearly degenerate ma…
This article reviews the factors limiting the figure of merit <i>zT</i> of conventional thermoelectrics especially at cryogenic temperatures and then highlights modern approaches used to increase <i>zT</i> below 200 K. Two type of materials are discussed. The first are BiSb alloys, relatively conventional thermoelectr…
A new figure of merit is developed for ranking pairs of materials as candidates for gradient index (GRIN) optics capable of good color correction. The approach leverages recent work which derives a connection in GRIN lenses between the optical properties of constituent materials and the wavelength dependence of the le…
Abstract A new family of lanthanide‐Schiff base complexes have been synthesized and fully characterized from the novel Schiff base ligand: H 2 L 1 (acetic acid 2‐hydroxy‐benzylidene‐hydrazide). The single crystal X‐ray structure and mass spectroscopy reveal the isostructural dinuclear complexes: [Ln 2 L 1 (HL 1 ) 3 (N…
The effect of the chemical composition in Si/Ge-based superlattices on their thermal conductivity has been investigated using molecular dynamics simulations. Simulation cells of Ge/SiGe superlattices have been generated with different concentration profiles such that the Si concentration follows a step-like, a tooth-s…
This article focuses on the electrochemical study of two titanium alloys employed in the manufacture of orthopedic implants – Ti-6Al-4V and Ti-6Al-7Nb – both of them obtained through powder metallurgy (PM). For comparative purposes, Ti-6Al-4V fabricated conventionally has also been investigated. Samples were immersed…
Hierarchically stacked graphene oxide (GO) membranes have been observed to undergo physical and chemical changes under ambient conditions. In this study, the slow degradation of GO membranes is mimicked and accelerated by UV light (254 nm) exposure. Spectroscopic and X-ray diffraction analyses confirm that the observe…
Abstract Bimodal mesoporous silica is prepared by co‐templating method using PEO‐ b ‐PLA diblock copolymer and F127 triblock copolymer. The pore size distribution of the mesoporous silica is bimodal, based on small angle X‐ray scattering, transmission electron microscopy, and nitrogen adsorption‐desorption isotherms a…
Infrared (IR) transmitting gradient index (GRIN) materials have been developed for broad-band IR imaging. This material is derived from the diffusion of homogeneous chalcogenide glasses has good transmission for all IR wavebands. The optical properties of the IR-GRIN materials are presented and the fabrication methodo…
The separation of photogenerated charges is a critical factor in photocatalysis. Recently, anomalous photovoltaic (APV) field effects (Voc ∼ 10(3) V/cm) in ferroelectrics, with their strong driving force for charge separation, have attracted much attention in photocatalysis and photoelectrocatalysis. However, it is st…
Abstract In this study, we fabricated a novel micro/nanowire hierarchical membrane with flexible, self‐cleaning and underwater superoleophobic properties for efficient oil‐water separation under vacuum filtration. This novel membrane composed of ultralong copper microwires (MW) and functional TiO 2 nanowires (NW). The…
We have investigated the magnetoresistance (MR) and Hall resistivity properties of a FeAs single crystal which exhibits magnetic order below ${T}_{N}$ = 69 K. We observe nonlinear Hall resistivity and linear MR in the presence of magnetic-order-connected Fermi surface reconstruction. The analysis of the magnetotranspo…
Voltage control of magnetism in multiferroics, where the ferromagnetism and ferroelectricity are simultaneously exhibiting, is of great importance to achieve compact, fast and energy efficient voltage controllable magnetic/microwave devices. Particularly, these devices are widely used in radar, aircraft, cell phones a…
Using temperature-dependent charge transport measurements, we investigated spectral density of states (DOS) in the bandgap of polythiophene thin-films under high carrier densities (&lt;3.5 × 1020 cm−3) induced by electrochemical doping. The thermally activated charge transport indicates that the electrical current…
In this paper, a green and high-efficiency method (ultrasound synthesis) has been applied in the preparation of a sodium lignosulfonate-grafted poly(acrylic acid-co-vinyl alcohol) superabsorbent polymer (SL-P(AA-co-VA)). By Fourier-transform infrared spectroscopy, scanning electron microscopy, and thermogravimetry–dif…
Size‐controlled silver nanoparticles (Ag NPs) with a size of 2–15 nm have been synthesised from silver (Ag) mirror reaction in toluene, which refers to reduction of Ag precursor (Ag–dodecylamine complexes solution) by acetaldehyde (CH 3 CHO) in the presence of oleic acid (OLA). In this synthesis, the size of Ag NPs wa…
Exposing uranium–molybdenum alloys (UMo) retained in the γ phase to elevated temperatures leads to transformation reactions during which the γ-UMo phase decomposes into the thermal equilibrium phases, i.e. U 2 Mo and α-U. Since α-U is not suitable for a nuclear fuel exposed to high burn-up, it is necessary to retain t…