Materials Literature
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Based on semiconductor materials fundamental equations, the calculation of the depletion region width and barrier capacitance of practical diffused -Gaussian profile- semiconductor junctions was achieved for the first time in this work. The obtained formulas are valid for p-n junctions, Schottky junctions, hetero-junc…
Core-shell germanium nanowire (GeNW) is formed with a single-crystalline Ge core and concentric shells of nitride and silicon passivation layer by chemical vapor deposition (CVD), an Al2O3 gate dielectric layer by atomic layer deposition (ALD) and an Al metal surround-gate (SG) shell by isotropic magnetron sputter dep…
A method previously proposed for calculating the radius of gyration and the intrinsic viscosity of dendrimers is modified to give a more accurate description of existing experimental data. The new method includes some features that were not previously considered, namely: a) a correction term to take into account the c…
It is shown that a ``vacuum polarization'' induced by Coulomb potential in graphene leads to a strong suppression of electric charges even for undoped case (no charge carriers). A standard linear response theory is therefore not applicable to describe the screening of charge impurities in graphene. In particular, it o…
The alpha-chains of the collagen superfamily are encoded with information that specifies self-assembly into fibrils, microfibrils, and networks that have diverse functions in the extracellular matrix. A key self-organizing step, common to all collagen types, is trimerization that selects, binds, and registers cognate…
Abstract Improving the sensitivity of magnetic resonance imaging (MRI), a powerful non‐invasive medical imaging technique, requires the development of novel contrast agents with a higher efficiency than gadolinium chelates such as DTPA:Gd (DTPA: diethylenetriaminepentaacetic acid) that are currently used for clinical…
Vocal fold scarring disrupts the viscoelastic properties of the lamina propria that are critical for normal phonation. There is a clinical need for the development of advanced biomaterials that approximate the mechanical properties of the lamina propria for in vivo vocal fold regeneration. We have developed hyaluronic…
We demonstrate a hybrid inorganic/organic light-emitting device composed of a CdSe/ZnS core/shell semiconductor quantum-dot emissive layer sandwiched between p-type NiO and tris-(8-hydroxyquinoline) aluminum (Alq3), as hole and electron transporting layers, respectively. A maximum external electroluminescence quantum…
Abstract The synthesis of transition metal spin‐clusters has become an important sub‐discipline of coordination chemistry, especially since the discovery of single‐molecule magnets (SMMs) in the early nineties. In this context, complexes with high spin‐numbers and large anisotropy are particularly desired. The use of…
We report a detailed crystal field analysis of ${\mathrm{Pm}}^{3+}$ and ${\mathrm{Sm}}^{3+}$ as well as lattice location studies of $^{147}\mathrm{Pm}$ and $^{147}\mathrm{Nd}$ in 2H-aluminum nitride $(w\text{\ensuremath{-}}\mathrm{AlN})$. The isotopes of mass 147 were produced by nuclear fission and implanted at an en…
Herein we report a complete family of conformationally restricted PProDOT derivatives with varying alkylene tether lengths. It was found that variation of the tether length and structure of the electropolymerizable monomer was successful in the fine-tuning of the electrochemical and optical properties of the subsequen…
ADP-Glc pyrophosphorylase (PPase), a key regulatory enzyme in the biosynthetic pathway of starch and bacterial glycogen, catalyzes the synthesis of ADP-Glc from Glc-1-P and ATP. A homology model of the three-dimensional structure of the Escherichia coli enzyme complexed with ADP-Glc has been generated to study the sub…
We have studied magnetic interactions in zinc-blende MnAs as a function of volume by ab initio density-functional calculations. The calculated Heisenberg pair-exchange parameters show a strong volume dependence. The calculated Curie temperatures, obtained by Monte Carlo simulations using ab initio parameters and a cla…
Abstract Edible films can be produced from kafirin but the diverse food product requirements necessitate modification of the films. To modify their functional properties, kafirin films were cast, with and without plasticizer, from glacial acetic acid (GAA) and aqueous ethanol (AE), then heated using microwave energy.…
In this work, experimental data points from which the profile of the order parameter of nematic liquid crystals can be obtained, mainly magnetic susceptibility anisotropy and dielectric anisotropy, will be used to show that when rescaled they coalesce along a common line that extends from the nematic-isotropic phase t…
Instabilities play a central role in the physics of foams. Some that change the topology of a dry foam are indicated by the laws promulgated by Plateau in his 1873 book. Their occurrence is less clearly predictable in wet foams. Various other instabilities are related to gravitational loading and gas compressibility.…
A novel type of fluorescent and anisotropic polysilsesquioxane xerogel ( CNPBESi ) was synthesized by the acid-catalyzed classical sol−gel reaction of organically modified silicates. Anisotropy and enhanced fluorescence emission were simultaneously induced by the strong self-assembly power of the organic bridge units.…
This paper investigates the thermodynamic potential of the integration of molten carbon fuel cell (MCFC) technology with gas turbine systems for small-scale (sub-megawatt or sub-MW) as well as large-scale (multi-MW) hybrid cycles. Following the proposals of two important MCFC manufacturers, two plant layouts are discu…
We present an x-ray diffuse scattering study of the charge-density wave (CDW) structure in the doped blue bronzes ${\mathrm{K}}_{0.3}({\mathrm{Mo}}_{1\ensuremath{-}x}{\mathrm{V}}_{x}){\mathrm{O}}_{3}$ $(x=2.8%)$, ${\mathrm{Rb}}_{0.3}({\mathrm{Mo}}_{1\ensuremath{-}x}{\mathrm{V}}_{x}){\mathrm{O}}_{3}$ ($x=1.44%$ and 0.2…
Composites with compositions ( x )Ni 0.8 Cu 0.2 Fe 2 O 4 + (1 − x )Ba 0.9 Pb 0.1 Ti 0.9 Zr 0.1 O 3 , in which x varies as 0, 0.15, 0.30, 0.45 and 1 mol%, were prepared by a standard ceramic technique. X-ray diffraction was used to carry out the structural analysis. The microstructural analysis was carried out by scann…