Materials Literature
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The paper presents the evaluation of the mechanical and fatigue properties of an ultrafine-grained (UFG) Al 6061 alloy processed by high-pressure torsion (HPT) at room temperature (RT). A comparison is made between the UFG state and the coarse-grained (CG) one subjected to the conventional aging treatment Т6. It is sh…
An analytical model and a methodology for determining the thermal diffusivity and the thermal conductivity of metallic thin films at room conditions are proposed. The analytical model is based on the one-dimensional heat transfer equation, which allows estimation of the thermal conductivity and thermal diffusivity thr…
This paper documents successful use of portland-limestone cement (PLC) with 50% replacement of cement using supplementary cementitious materials (SCMs) during expansion and renovation of a college football stadium. Concrete becomes more sustainable as clinker content is reduced, and use of PLC in place of ordinary por…
The dispersion stability of silica aggregates in the rubber matrix is one of the concerns for silica-filled compounds. Silica aggregates tend to flocculate due to their poor compatibility with the rubbers and consequent strong tendency for self-association. The flocculation process can occur during compound storage as…
A self‐assembled three phase epitaxial nanocomposite film is grown consisting of ≈3 nm diameter fcc metallic Cu nanorods within square prismatic SrO rocksalt nanopillars in a Sr(Ti,Cu)O 3‐ δ perovskite matrix. Each phase has an epitaxial relation to the others. The core–shell‐matrix structures are grown on SrTiO 3 sub…
The lattice parameter dependence of the Néel temperature TN of thin Cr2O3 in a Cr2O3/Co exchange-coupled system is investigated. Lattice-mismatch-induced strain is generated in Cr2O3 by using different buffer layers. The lattice parameters are determined from out-of-plane and in-plane X-ray diffraction measurements. T…
We use aberration-corrected scanning transmission electron microscopy, electron energy-loss spectroscopy, atomic force microscopy, and the density functional theory to study the structural and electronic characteristics of graphene grown on the C face of SiC. We show that for high growth temperatures the graphene/SiC(…
Aluminum and magnesium have a strong plasmonic response in the ultraviolet part of the spectrum. Due to the differences in their dielectric responses, however, there are qualitative differences in the fluorescence enhancement factors for Al and Mg nanoapertures. In order to make our results applicable to experimental…
The detailed optical properties of the multiband iron-chalcogenide superconductor ${\mathrm{FeTe}}_{0.55}{\mathrm{Se}}_{0.45}$ have been reexamined for a large number of temperatures above and below the critical temperature ${T}_{c}=14\phantom{\rule{0.28em}{0ex}}\mathrm{K}$ for light polarized in the $a\text{\ensurema…
The decoration of graphene samples with adatoms or nanoparticles leads to the enhancement of spin-orbit interactions as well as to the introduction of symmetry-breaking effects that could have drastic effects on spin and electronic transport phenomena. We present an analysis based on symmetry considerations and examin…
Electrospun nanofibers have been extensively used in growth factor delivery and regenerative medicine due to many advantages including large surface area to volume ratio, high porosity, excellent loading capacity, ease of access and cost effectiveness. Their relatively large surface area is helpful for cell adhesion a…
We present a comprehensive study of the band bending and alignment at the interface of $\ensuremath{\gamma}\text{\ensuremath{-}}{\text{Al}}_{2}{\text{O}}_{3}/{\text{SrTiO}}_{3}$ heterostructures by hard x-ray photoelectron spectroscopy. Our measurements find no signs for a potential gradient within the polar $\ensurem…
Nanofibers has gained significant prominence in recent years due to its wide applications in medicinal pharmacy, textile, tissue engineering and in various drug delivery system. In oral drug delivery system (DDS), nanofibers can be delivered as Nanofiber scaffolds, electrosponge nanofibers as oral fast delivery system…
Droplet sliding on surfaces is an important phenomenon since it widely happens in microfluidic industry. In this article, we simulate droplets sliding across micropillars on smooth substrates to test how the pillars with different intrinsic wettability influence the movement of droplets. The simulation is performed us…
Since the discovery and synthesis of carbon nanotubes (CNTs) and carbon nanofibers (CNFs) over a decade ago, researchers have envisioned and discovered new potential applications for these materials. CNTs and CNFs have rapidly become a platform technology for a variety of uses, including biomedical applications due to…
Electric fields are generally known to favor the ferroelectric polar state over the antiferroelectric nonpolar state for their Coulomb interactions with dipoles in the crystal. In this paper, we directly image an electric-field-assisted ferroelectric-to-antiferroelectric phase transition during polarization reversal o…
Liquid crystalline polymers (LCPs) combine the attributes of liquid crystals and polymers, while discotic LCPs have been less developed in sharp contrast to their calamitic counterparts mainly due to lack of suitable discotic LCP materials. Here we successfully prepared a series of well-defined triphenylene (TP) based…
ABSTRACT Polylactic acid (PLA) was reactively functionalized with maleic anhydride (MA) and 2,5‐bis( tert ‐butylperoxy)−2,5‐dimethylhexane (Luperox 101 or L101) using a twin screw extruder (TSE). The effects of functionality (grafted MA level) and/or number average molecular weight of functionalized PLA (PLA‐ g ‐MA) a…
Chemical vapour deposition (CVD) growth of graphene has attracted much attention, aiming at the mass production of large-area and high-quality specimens. To optimize the growth condition, CVD grown graphene is conventionally characterized after synthesis. Real-time observation during graphene growth enables us to unde…
Using the tight-binding approach, we calculate the electronic structure of triangular and hexagonal ${\mathrm{MoS}}_{2}$ quantum dots. Due to the orbital asymmetry we show that it is possible to form quantum dots with the same shape but having different electronic properties. The electronic states of triangular and he…