Materials Literature
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Abstract (00l)‐Oriented La 2 Ti 2 O 7 (LTO) thin films with monoclinic perovskite‐layer structure [a = 7.806(2) Å, b = 5.552(3) Å, c = 13.015(5) Å, β = 98.62(2)°] have been grown by a sol–gel route on conducting (110)‐oriented doped Nb:SrTiO 3 (STO) substrates. The narrow rocking curves (0.24° width for 004 LTO peak)…
Abstract As-synthesized ZnS:Cu,Al nanocrystals with average size of 2–3 nm show abroad emission band peaking at 445 nm (blue) and a shoulder at around 540 nm (green). Annealing the nanocrystals in nitrogen gas results in a reduction in the intensity of the blue emission while enhancing the intensity of the green emiss…
Progesterone receptor (PR) is a significant biomarker in diseases such as endometriosis and breast, ovarian, and uterine cancers that is associated with disease prognosis and therapeutic efficacy. While receptor status is currently determined by immunohistochemistry assays, the development of noninvasive PR imaging ag…
Abstract This study investigated physical, mechanical, and fire properties of the flat‐pressed wood plastic composites (WPCs) incorporated with various fire retardants (FRs) [5 or 15% by weight (wt)] at 50 wt % of the wood flour (WF). The WPC panels were made from dry‐blended WF, polypropylene (PP) with maleic anhydri…
Click chemistry based on a 1,3-dipolar cycloaddition between lipophilic gold nanorods (GNRs) containing an acetylene group with spherical silver nanoparticles containing an azide has been accomplished (see scheme). Phantom experiments show that this organic transformation did not affect the suitability of the gold nan…
Matrix-enhanced delivery of cells is a promising approach to improving current cell therapies. Our objective was to create cell-laden composite microbeads that combine the attractive features of the natural polymers chitosan and fibrin. Liquid polydimethylsiloxane was used to emulsify a chitosan-fibrinogen solution co…
Soluble, film-forming near-infrared arylene bisthienoimidazole dyes with a band gap of 1.2-1.3 eV are electrochromic and absorb strongly at the telecommunication wavelengths (1310 and 1550 nm) in the oxidized state.
Diamondoids are hydrogen-terminated nanosized diamond fragments that are present in petroleum crude oil at low concentrations. These fragments are found as oligomers of the smallest diamondoid, adamantane (C(10)H(16)). Due to their small size, diamondoids can be encapsulated into carbon nanotubes to form linear arrang…
A theoretical model including both crystal-field and exchange interactions that considers the effect of magnetic fluctuations is developed to evaluate the temperature dependence of the isothermal magnetic entropy changes in ferromagnetic rare-earth-based intermetallic compounds. The Green's functions are derived from…
We report on the use of surface-sensitive techniques (x-ray absorption spectroscopy and x-ray magnetic circular dichroism) to investigate interfacial effects in sputtered manganite thin films, La${}_{2/3}$Ca${}_{1/3}$MnO${}_{3}$ (LCMO) and La${}_{2/3}$Sr${}_{1/3}$MnO${}_{3}$ (LSMO), with different capping layers [MgO,…
Using a combination of density functional theory calculations and statistical mechanics, we show that a wide range of intermediate compositions of ceria-zirconia solid solutions are thermodynamically metastable with respect to phase separation into Ce-rich and Zr-rich oxides. We estimate that the maximum equilibrium c…
The mass manufacture of tires and the difficulty in storing or disposing them constitute a serious environmental problem. At present, various recycling methods for tires are used, such as grinding, which separates the steel and fibers from the vulcanized rubber, then using the rubber in numerous industrial application…
Gold nanoparticles with average diameters in the range 2.5-15 nm, prepared at the organic/aqueous interface by using tetrakis(hydroxymethyl)phosphonium chloride (THPC) as reducing agent, exhibit ferromagnetism whereby the saturation magnetization M(S) increases with decreasing diameter and varies linearly with the fra…
The performance of kenaf powder (KP) filled recycled high density polyethylene (rHDPE) /natural rubber (NR) blends with and without a compatibilizer, were investigated. The composites with different filler loading (0 to 40 phr) were prepared with a Haake internal mixer. Increasing the KP loading in rHDPE/NR/KP biocomp…
A simple and general method to realize Janus paramagnetic micro-ellipsoids is demonstrated. We elongate liquefied spherical paramagnetic particles embedded in a thermoplastic thin film upon application of a mechanical stress and gather the magnetic doping of the particles by using an external high magnetic field gradi…
Designing an active site: A new type of core–shell structured catalyst was prepared, with a uniform SiO2 core supporting Pd nanoparticles (NPs) covered with a Ti-containing mesoporous silica shell. Generated H2O2 on the inner Pd NP site could interact with the Ti oxide moieties within the mesopores before dispersion t…
In this study, the impact of randomly oriented electrospun polyamide nanofibrous architecture on neurogenic differentiation of human embryonic stem cells (hESCs) compared with the lack of nanofibrous features in vitro in a neural-inducing condition was examined. Flow cytometry analysis of hESC-derived neural ectoderm…
Abstract Under stratified flow and dewing conditions, internal corrosion can occur at the top of horizontal pipelines where continuous injection of corrosion inhibitors does not have a mitigating effect. This research work presents an experimental study of the influence of the presence of hydrogen sulfide (H2S; up to…
Striped catalysts: The effect of composition and structure on the catalytic efficiency of gold nanoparticles protected by a monolayer composed of two types of ligands differing in length (see picture) is reported. By diluting catalytically active ligand molecules with simple catalytically inactive molecules the cataly…
We present a new approach for the fabrication and integration of vertically aligned forests of amorphous carbon nanowires (CNWs), using only standard lithography, oxygen plasma treatment, and thermal processing. The simplicity and scalability of this process, as well as the hierarchical organization of CNWs, provides…