Materials Literature
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Crystal nucleation at a glass–solution interface has been demonstrated by evanescent-wave laser-induced nucleation for the first time. Nucleation was induced in supersaturated aqueous potassium chloride (KCl) solutions. The interaction volume was estimated to be <2 nL, localized within approximately 100 nm of the inte…
A new type of hierarchical anatase TiO2 microcage is obtained via an in situ topotactic transformation from prefabricated CaTiO3 microcages. The TiO2 microcages are composed of 3D perpendicular nanocrystals with six equivalent side faces that are dominated by anatase {001}A facets. As an anode material these unique an…
This article presents the experimental study of a preliminary investigation of a seismic damper device aimed at improving the behavior of structures when subjected to earthquakes. The damper is the result of a binomial material formed by an aluminum foam with pores of 1 mm diameter wetted by a magnetorheological fluid…
The design of binding sites for divalent metals in artificial proteins is a productive platform for examining the characteristics of metal-ligand interactions. In this report, we investigate the spectroscopic properties of small peptides and four-helix bundles that bind Cu(II). Three small peptides, consisting of 15 a…
Utilizing the pyridinediimine ligand [(2,6-(i)PrC6H3)N═CMe)(N((i)Pr)2C2H4)N═CMe)C5H3N] (didpa), the zinc(II) and iron(II) complexes Zn(didpa)Cl2 (1), Fe(didpa)Cl2 (2), [Zn(Hdidpa)Cl2][PF6] (3), [Fe(Hdidpa)Cl2][PF6] (4), Zn(didpa)Br2 (5), and [Zn(Hdidpa)Br2][PF6] (6), Fe(didpa)(CO)2 (7), and [Fe(Hdidpa)(CO)2][PF6] (8)…
Recent animal studies have shown that carbon nanotubes (CNTs) may pose a significant health risk to those exposed in the workplace. To further understand this potential risk, effort must be taken to measure the occupational exposure to CNTs. Results from an assessment of potential exposure to multi-walled carbon nanot…
ABSTRACT In this study, the experiments of gas‐assisted extrusion (GAE) for molten polypropylene were carried out under different gas pressures, the different extrudate deformations and sharkskin defects of melt were observed. To ascertain the effects of gas on melt extrusion, non‐isothermal numerical simulation of GA…
Orbital interaction plays an important role in topological insulators. Using first-principles calculations, we demonstrate that hydrogenation can change two-dimensional (2D) trivial insulator/semimetal-like Pb, Mo, and W to a ${Z}_{2}$ topological insulator with giant gaps by filtering unwanted orbitals such as the ${…
Abstract Damping and vibration characteristics of basalt-aramid/epoxy hybrid composites with different basalt/aramid fiber mixing ratios were investigated. Unidirectional basalt and twill weave aramid fibers were used as reinforcement. Non-hybrid basalt/epoxy and aramid/epoxy composite laminates were also fabricated f…
Belonging to the class of chromium tool steels, AISI H11 possesses very good toughness and hardness, and is therefore suitable for hot metalforming jobs performed at very high loads. Mostly used in fabrication of helicopter rotor blades, H11 also has great potential as a die steel in hot-work forging and extrusion. Th…
Here, a novel method to prepare high performance shear thickening fluids (STFs) by dispersing calcinated silica microspheres into ethylene glycol is reported. The silica particles were prepared by hydrolyzing tetraethylorthosilicate (TEOS), and then they were treated under high temperature to remove the physically ads…
This paper investigates the crystallinity, microstructure, surface morphology, stress characteristics, and Young's Modulus of ultrahigh vacuum (UHV) electron-beam (E-beam) evaporated silicon films with a low thermal budget. The films are evaporated at various substrate temperatures ranging from 200 °C-625 °C, depositi…
We present radio and infrared observations indicating ongoing star formation activity inside the ∼2–5 pc circumnuclear ring at the Galactic center. Collectively these measurements suggest a continued disk-based mode of ongoing star formation has taken place near Sgr A* over the last few million years. First, Very Larg…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTHalogen Bond Effect for Single-Crystal-to-Single-Crystal Transformation: Topochemical Polymerization of Substituted QuinodimethaneTakahito Itoh*†, Shinji Nomura†, Hirofumi Nakasho†, Takahiro Uno†, Masataka Kubo†, Norimitsu Tohnai‡, and Mikiji Miyata‡View Author Information† Div…
This paper investigates the effect of nanostructured and micrometre size YSZ powder coated plasma spray coating on high temperature oxidation resistance of Inconel (IN 718) substrate. The oxidation rate and reaction kinetics are studied, and the post-corroded scales are characterised in SEM, field emission SEM and X-r…
In ideal two-stage collimation systems, the secondary collimator–absorber should have its length sufficient to exclude practically the exit of halo particles with large impact parameters. In the UA9 experiments on the crystal assisted collimation of the SPS beam a 60 cm long tungsten bar is used as a secondary collima…
ABSTRACT Highly selective cellulose acetate (CA) blend imprinted membranes for salicylic acid (SA) removal were synthesized by phase inversion technique with chitosan as a functional polymer and chitosan‐wrapped multi‐walled carbon nanotubes (CHI‐wrapped MWCNTs) as the additives. The surface and cross‐sectional morpho…
Solid and nonconductive discharge products that form on the cathode of Li-O2 batteries are difficult to decompose efficiently into Li(+) and O2 during charging, which induces a high overcharge potential, low energy efficiency, and poor cyclability. In this paper, we investigated the effects of the mesoporous structure…
To understand feed‐to‐glass conversion for the vitrification of nuclear waste, we investigated batch reactions and phase transitions in a simulated nuclear waste glass melter feed heated at 5 K/min up to 700°C using optical microscopy, scanning electron microscopy with energy‐dispersive X‐ray spectroscopy, and X‐ray d…
A simple anthracene based chalcone as a fluorescent chemosensor, capable of detecting Pb 2+ in aqueous media, has been synthesized by the reaction between benzaldehyde and 9-acetyl anthracene. The Pb 2+ recognition process follows a photo-induced electron transfer mechanism and is scarcely influenced by other coexisti…