Materials Literature
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We have performed ${}^{75}$As and ${}^{23}$Na nuclear magnetic resonance (NMR) measurements on a single crystal of NaFe${}_{0.9835}$Co${}_{0.0165}$As and found microscopic coexistence of superconductivity with a two-component spin density wave (SDW). Using ${}^{23}$Na NMR we measured the spatial distribution of local…
A novel method was used to grow epitaxial ZnO films by employing a nanorod assisted lateral epitaxial overgrowth process at a low growth temperature of 90 °C in water utilizing a continuous circulation reactor. The relatively smooth films had an epitaxial relationship with the sapphire substrate, as confirmed by off-a…
In this work, the ${}^{55}$Mn spin-echo nuclear magnetic resonance technique is used to systematically analyze the complete substitutional series Co${}_{2}$Mn${}_{1\ensuremath{-}x}$Fe${}_{x}$Si in terms of the resonance frequencies of the satellite structure and the corresponding hyperfine fields of the ${}^{55}$Mn nu…
The influence of 1,3:2,4-bis(3,4-dimethylbenzylidene) sorbitol (DMDBS) and tetrasilanolphenyl silsesquioxane (phPOSS) on the modification of isotactic polypropylene (iPP) was investigated. In particular, dependency of crystallization behavior on the cooling rate was determined. To understand these effects the results…
Precision glass molding has a well-documented effect of a decrease in the index of refraction of the glass during the molding process. This index drop has such significant value that optical designs for molded lenses must take into account the index drop to accurately determine the optical performance of the final len…
Porous silica has been chemically modified with conjugated phenylamine and phenyldiamine moieties using the homogeneous route. This synthetic route involved the reaction of carbaldehyde derivatives with 3-aminopropyltrimethoxysilane prior to immobilization on the support. The resulting materials have been characterize…
In this paper, we report on the lattice dynamical investigation of the Raman and the infrared frequencies of the tetragonal AMoO4 (A = Sr, Ba and Pb) crystals obtained by normal coordinate analysis. The calculation of zone centre phonons has been made by using four stretching and five bending force constants. The calc…
Third-generation direct methods programs are based on a phasing algorithm (e.g.the tangent or the parameter shift method) and on dual space refinement techniques. The two spaces may be alternated during the phasing procedure or used in a sequential way: for example, first phase and after extend and refine. The tangent…
Thiazolino fused 2-pyridone peptidomimetics are of significant biological importance due to their ability to interfere with adhesive fiber formation in uropathogenic Escherichia coli and oligomerization of amyloid fibers. We have developed an efficient synthetic route to fluorescent BODIPY analogues, with structural d…
A metal microtextured thermal interface material (MMT-TIM) has been proposed to address some of the shortcomings of conventional TIMs. These materials consist of arrays of small-scale metal features that plastically deform when compressed between mating surfaces, conforming to the surface asperities of the contacting…
As an ancient arthropod with a history of 390 million years, spiders evolved numerous morphological forms resulting from adaptation to different environments. The venom and silk of spiders, which have promising commercial applications in agriculture, medicine and engineering fields, are of special interests to researc…
The effect of addition of organoclay and the reactive ABS‐g‐MA core‐shell particles on the mechanical properties and morphology of blends of polyamide (PA6) were reported. The reactive rubber particles with core‐shell structure were selected as modifier instead of conventional reactive bulk rubber. The microstructure…
Abstract Aggregation-induced emission has been observed in a tripodal liquid-crystalline (LC) quinolinium salt. The quinolinium salt exhibits a liquid-crystalline columnar phase within the temperature range 56–191 °C. In the bulk LC state, the compound shows yellow emission. The fluorescence quantum yield (Φ) is 12.6%…
Na was intercalated between [Fe2S2] layers for the first time, giving a novel compound NaFe(1.6)S2. This material adopts a CaAl2Si2-type structure with ~20% iron vacancies and represents the first layered compound in a ternary Na-M-X (M = Fe, Co, Ni; X = S, Se) system. First-principles calculations reveal that phonon…
Calotropis procera Ait. (Family Asclepiadaceae) is a species widely used for the treatment of various diseases including sickle cell disease in Burkina Faso. It enter in the composition of FACA®, drug developed by Institute for Research in Health Sciences, Burkina Faso and used in the treatment of sickle cell disease.…
The self-assembly behaviour both in the bulk and water of a series of amphiphilic dendrimers constituted by second generation PAMAM ionically functionalized with different amounts of myristic acid is shown here. The number of acids in the dendrimer determines the liquid-crystal properties and the structural parameters…
This study presents a computational model for deformation behaviour of near-equiatomic NiTi holey plates using finite element method. Near-equiatomic NiTi alloy deforms via stress-induced A↔M martensitic transformation, which exhibits a typical hystoelastic mechanical behaviour over a stress plateau, known as the pseu…
Even after significant advances in the structural characterization of quasicrystals--phases whose diffraction patterns combine the sharp peaks normally associated with lattice periodicity and rotational symmetries antithetical to such periodicity--this new form of long-range order remains enigmatic. Here, we present D…
We have developed a green method for the production of 2,6-disubstituted p-benzoquinones (DSBQs) by liquid-phase oxidations of di/tri-substituted phenols using two-dimensional hexagonally thick-walled mesoporous vanadosilicate catalysts. In particular, 2,6-di-tert-butyl-p-benzoquinone was synthesized by the oxidation…
We present the preparation and characteristics of liquid-phase sensors based on nano-porous silicon multilayer structures for determination of organic content in gasoline. The principle of the sensor is a determination of the cavity-resonant wavelength shift caused by refractive index change of the nano-porous silicon…