Materials Literature
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The influence of organic solvent exchange techniques on the microstructure and the dimensional stability of monosulfate (3CaO.Al2O3.CaSO4.12H2O) was critically investigated. Monosulfate samples were treated with methanol, ethanol and isopropanol, and examined by different analytical techniques including X-ray diffract…
We report here new computational tools and strategies to efficiently generate three-dimensional models for oligomeric biomolecular complexes in cases where there is limited experimental restraint data to guide the docking calculations. Our computational tools are designed to rapidly and exhaustively enumerate all geom…
A taxel device on flexible substrates based on the electrical contact resistance (ECR) variation mechanism is developed. The proposed taxel device consists of one top and one bottom substrates, which are coated with conductive polymer then face-to-face assembled. The device is tested with different substrate materials…
Abstract magnified image A vertically integrated nanogenerator (VING) refers to the new generation of mechanical energy harvesting devices: arrays of piezoelectric and semiconducting nanowires are grown perpendicularly to a substrate and appropriate electrodes enable charge circulation through an external electrical l…
In this study, we have investigated the hydrothermal stability of mesostructured titania having either amorphous or nanocrystalline walls. On the basis of Raman, XRD, and N 2 adsorption–desorption analysis, we have shown that the alteration of the mesostructure is mainly due to the appearance or the growth of anatase…
For the characterisation of group III nitrides by X-ray diffraction there are several challenges. In particular: a) reliable reference data on cell parameters of the end members and b) a simple and reliable method to obtain the alloy content of a thin film or multi-quantum layer structure that is fully strained to a t…
The influence of hydrogen impurities on the electronic properties of undoped BaTiO3 was studied from a microscopic point of view using the muon spin rotation and relaxation technique. Electron localization around an implanted positive muon, by analogy a hydrogen impurity, was observed below ∼80 K. The effective electr…
The perpendicular magnetic anisotropy(PMA) was shown to be established in ferromagnetic (FM)/fcc-Mn bilayers through the FM-antiferromagnetic (AFM) exchange coupling. We demonstrate here that such PMA can be further enhanced by incorporating an ultrathin Fe film as an underlayer. In a series of Fe/Mn bilayers, hystere…
This work studies the individual and cumulative effects of citrus fiber, rice bran and collagen on the texture and selected sensory characteristics of frankfurter-type sausages. A mixture design including two ingredients (citrus fiber and rice bran ranging from 0 to 2%) plus one process variable (13 and 27% collagen)…
Enhanced performance of polymer solar cells is reported by incorporating a solution-processed luminescent down-shifting (LDS) sensitizer, which is composed of a C545T fluorescent molecule doped tris(8-quinolinolato) aluminum (C545T:Alq3). An optimized LDS sensitizer can result in ∼15% enhancement in power conversion e…
Strong perpendicular exchange bias was realized in sputter-deposited CoPt/CoO multilayers. The as-deposited multilayer shows strong perpendicular magnetic anisotropy (PMA) which remains up to a critical CoPt layer thickness as thick as 4 nm. After perpendicular field cooling, the multilayer with antiferromagnetic CoO…
A chlorocuprate ionic liquid functionalized biochar sulfonic acid (BCSA–IL-Cu) catalyst was proposed and conveniently prepared via grafting 1-trimethoxysilyl propyl-3-methyl imidazolium chloride (IL)-CuCl 2 (IL-Cu) onto biochar sulfonic acid (BCSA). The proposed catalyst showed much higher turnover numbers (TONs, 3.54…
Dual gate amorphous-InGaZnO4 (a-IGZO) thin-film transistors (TFTs) with a bottom gate that covers the whole channel and a top gate that covers only a small portion of the channel are investigated. It is shown that if the larger gate (bottom gate) is held at constant positive bias, while the smaller gate (top gate) dri…
Schottky CdTe X-ray detectors exhibit excellent spectroscopic performance but suffer from instabilities. Hence it is of extreme relevance to investigate their electrical properties. A systematic study of the electric field distribution and the current flowing in such detectors under optical perturbations is presented…
According to Cr content, ternary Al1-xCrxNy films structure evolves from hexagonal to cubic phase. Despite numerous studies on their mechanical properties in relation with the deposition process, the relationship between this phase transition and elastic properties has never been deeply studied. In this paper, the tra…
Organic semiconductor thin films were fabricated by thermal deposition of free-base and metal phthalocyanines under a static magnetic field. A vertical magnetic field enhanced the crystallinity of the edge-on orientation of the phthalocyanine discs, whereas a horizontal magnetic field had a minimal effect on the cryst…
A series of self-assembled monolayers (SAMs) on gold were generated by the adsorption of n-alkyl xanthic acids (NAXAs) having the general formula CH3(CH2)nOCS2H (n = 12-15). The structural features of these SAMs were characterized by optical ellipsometry, contact angle goniometry, polarization modulation infrared refl…
Highly ordered epitaxial Sr2CrReO6 films of 20-nm and 175-nm thicknesses were deposited on SrTiO3 and (LaAlO3)0.3(Sr2AlTaO6)0.7 substrates and Sr2CrNbO6 buffer layers. Electronic measurements and scanning transmission electron microscopy images clearly show that the Sr2CrNbO6 buffer layers facilitate Cr/Re ordering ne…
The energy levels of the As-As dimer defect at GaAs/oxide interfaces are accurately determined within a hybrid functional scheme and aligned with respect to the GaAs band gap. An As-As dimer is constructed at a model interface between GaAs and κ-Al2O3, which satisfies electron counting rules. The defect is studied thr…
In this study, a Pt/BiFeO3/TiN device was fabricated and the resistance switching characteristics were investigated. After the first forming process, the conduction path was formed and exhibited unstable bipolar switching characteristics. Subsequently, the original conduction path was destroyed thoroughly by high nega…