Materials Literature
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Homogeneous esterification of cellulose with octanoyl chloride (a long-chain fatty acid) was investigated in lithium chloride/N,N-dimethyl acetamide (LiCl/DMAc) medium. Cellulose was readily esterified by the octanoyl chloride, as shown by 1H NMR analysis. The effects of the ratio of octanoyl chloride to cellulose hyd…
Among the families of iron-based superconductors, we investigate flux pinning mechanisms in the Fe(Se 1− x Te x ) compound. We perform magneto-resistance and current-voltage measurements on single-crystals, as well as on several epitaxial thin films grown on different substrates (CaF 2 , LaAlO 3 ). The activation ener…
Nanoscrolls (papyrus-like nanostructures) are very attractive structures for a variety of applications, owing to their tunable diameter and large accessible surface area. They have been successfully synthesized from different materials. In this work, we investigate, through fully atomistic molecular dynamics simulatio…
A Pyroelectric Scanning Microscopy system, which uses laser-induced thermal modulation for mapping the pyroelectric response, has been used to image a bipolar domain pattern in a ferroelectric polymer thin film capacitor. This system has achieved a resolution of 660 ± 28 nm by using a violet laser and high f-number mi…
The interaction of ethylene and acetylene molecules with planar (2D) and nonplanar (3D) gold clusters Au n (n = 10, 12, 20) was studied by the density functional theory (DFT) method. The coordination of hydrocarbons at the vertices, edges, and fragments of the Au3 cluster was shown to form π, di-σ, and μ type complexe…
BACKGROUND & AIMS: Hepatocellular carcinoma (HCC) is associated with a poor prognosis because of a lack of effective treatment options. The objective of this study was to examine a new strategy for HCC treatment, namely the use of poly (ADP-ribose) polymerase 1 (PARP-1) inhibitor (ABT-888) together with Temozolomide (…
We report on the experimental determination of the spontaneous polarization of wurtzite-(Mg,Zn)O by examination of the recombination dynamics of polar ZnO/(Mg,Zn)O quantum wells (QWs). The thickness-dependent decay time of the unscreened single-exciton states inside the QWs was modeled by a self-consistent solution of…
The temperature variation of the splay and bend elastic constants of a binary system exhibiting nematic-induced smectic Ad and re-entrant nematic phases measured by electric field-induced Freedericksz transition method has been reported. As bend deformation is not permitted in the smectic A phase, bend elastic constan…
Abstract Controlled directional spreading of a droplet on a smart high‐adhesion surface was made possible by simply controlling anodic oxidation. The wettability gradient of the surface was controlled from 0.14 to 3.38° mm−1 by adjusting the anodic oxidation conditions. When a water droplet made contact with the subst…
Surface-enhanced Raman scattering effect was demonstrated on nanomaterial array, which was fabricated by Au deposition on the profile of etched Si nanowires. Ultrasensitive surface-enhanced Raman scattering signals from the nanoside array structures were observed with the enhancement factor of 2.3 × 109, even though t…
A novel flame‐retardant aluminum β‐carboxylethylmethylphosphinate [Al(CEP)] was synthesizedby a simple process. The effect of Al(CEP) on the curing of epoxy resin (EP) was investigated with differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy. The flame retardancy and thermal properties…
We report ${}^{75}$As and ${}^{51}$V nuclear magnetic resonance (NMR) measurements on the iron-based superconductor ${\text{Sr}}_{2}$${\text{VFeAsO}}_{3}$ with alternating stacks structure. We find that the ${}^{75}$As nuclear spin-spin relaxation rate ($1/{T}_{2}$) shows a pronounced peak at ${T}_{N}$ = 165 K, below…
Ultrathin films of Fe3O4 have been grown epitaxially on nearly lattice matched MgO(001). The stability of 4 nm thick films in ambient air and under annealing in an oxygen atmosphere at 200 °C has been studied. By magneto optical and Raman measurements, we can confirm the presence of the Fe3O4 phase and the formation o…
A systematical ab initio analysis on MP 2 O 7 (M = Ti, Hf) is presented in this work. Density functional theory ( DFT ) computations were performed for the electronic, mechanical, and thermal properties of MP 2 O 7 . Heterogeneous bonding nature of MP 2 O 7 was revealed by examining the structural and electronic prope…
The inhibitive effects of the dibutyl phosphate anion in cerium dibutylphosphate [Ce(dbp)3] on AA 2024-T351 immersed in 0·05M NaCl were evaluated by comparison with immersion in cerium chloride (CeCl3) in 0·05M NaCl as well as 0·05M NaCl alone. Scanning electron microscopy and energy dispersive X-ray hyperspectral map…
A series of flame-retarded thermoplastic poly(imide–urethane)s (TPIUs) with either ammonium polyphosphate (APP) alone or APP and dipentaerythritol (DPER) have been prepared. The fracture strength and strain of TPIU composites decrease with increasing amount of intumescent flame retardant (IFR), as shown by tensile tes…
Novel Dy 3+ and Ce 3+ doped Si – B – Na – Sr ( SBNS ) glasses were synthesized by melt‐quenching technique. Excited by 327 nm, the 0.5Dy 3+ ‐and 0.5Ce 3+ ‐doped SBNS exhibits white emission with Commission Internationale de L'Eclairage coordinates of (0.308, 0.280). Basic optical characterizations have been performed…
Si OCN ceramics have been prepared by the polymer pyrolysis method. The preceramic polymers were synthesized from a polysiloxane cross‐linked with two different N‐containing compounds: a silazane or a ternary amine. The corresponding Si OCN ceramics were obtained by pyrolysis in nitrogen atmosphere at five different t…
Abstract. Seed major and minor axes of three canola varieties with high oil content (45H29 at 8%, 10%, and 12% moisture content wet basis, and Invigor 5440 and Nex4 105 at 10% moisture content) and one low-oil canola variety (5525 Clearfield at 10% moisture content) were measured at room temperature. Bulk density, ang…
Abstract This paper reviews the mechanisms of initiation and the prevention of TLC. Practical multi-faceted techniques based on the most recent research and developments will be described and then illustrated using documented sources to arrive at best practices for control of this significant corrosion manifestation.…