Materials Literature
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Low resistive contacts were formed on heavily phosphorus-doped diamond (n+) films with phosphorus concentration of over ∼1020cm−3 grown on (111) diamond substrates by microwave plasma enhanced chemical vapor deposition with precise control of growth conditions. The specific contact resistance was determined by charact…
BACKGROUND: Gram-positive bacteria of the genus Anoxybacillus have been found in diverse thermophilic habitats, such as geothermal hot springs and manure, and in processed foods such as gelatin and milk powder. Anoxybacillus flavithermus is a facultatively anaerobic bacterium found in super-saturated silica solutions…
Tumor-targeting drug delivery systems are being the ideal carrier for systemic administration of antiproliferative drugs. RGD peptide (arginine-glycine-aspartic acid) modified liposomes containing paclitaxel (RGD-SSL-PTX). The arginine-glycine-aspartic acid tripeptide (RGD) modified sterically stabilized liposomes (SS…
Glycine nanocrystals, grown in aligned nanometer-scale cylindrical pores of nanoporous polystyrene-poly(dimethyl acrylamide) monoliths by evaporation of imbibed aqueous solutions, adopt preferred orientations with their fast-growth axes aligned parallel with the pore direction. X-ray diffraction analysis revealed the…
The valence band offset of ZnO/AlN heterojunctions is determined by high resolution x-ray photoemission spectroscopy. The valence band of ZnO is found to be 0.43±0.17 eV below that of AlN. Together with the resulting conduction band offset of 3.29±0.20 eV, this indicates that a type-II (staggered) band line up exists…
We find the exact solution of graphene carriers dynamics under electromagnetic radiation. To obtain the solution of the corresponding Dirac equation, we combine Floquet theory with a trial solution. Then the energy spectrum is obtained without using any approximation. We also prove that the energy spectrum presents a…
The effect of external electric fields on the orientation of (MnTi″−VO••)× defect dipoles in ferroelectric BaTiO3 single crystals and its interplay with the domain structure were investigated by means of electron paramagnetic resonance (EPR) spectroscopy and optical microscopy. The results show that in specimens aged…
Polycrystalline AgSbTe2 ternary compound materials with high phase purity were fabricated using a combined process of mechanical alloying and spark plasma sintering. It was found that stoichiometric AgSbTe2 is a promising composition for low-and-mediate temperature applications, whose ZT reaches 1.59 at 673K, benefiti…
The synthesis and spectroscopic properties of a series of boron-free meso -aryl-substituted [14]triphyrin(2.1.1) compounds containing either peripheral bicyclo[2.2.2]octadiene (BCOD) ( 2a − c ) or benzene rings ( 3a − c ) (aryl = phenyl a, 4-fluorophenyl b, and 4-methylbenzoatephenyl c ) are reported. These compounds…
Type-II CdTe/CdSe quantum dots are synthesized by an aqueous method of layer-by-layer epitaxial growth. The QDs are 4–5 nm in diameter witha fluorescence quantum yield up to 12% in the near-infrared region (NIR; see image). They match the demands for the probes of NIR in vivo imaging and are applied in fixed Hela cell…
DOI: 10.1002/adfm.200800672 The acknowledgements for this manuscript contain an error. The correct last line is: We thank Prof. Jing Li in Department of Chemistry and Chemical Biology, Rutgers University and Prof. Xiaoying Huang in Fujian Institute of Research on the Structure of Matter for enjoyable collaboration on…
An alternative design strategy for inventing new triggered gelations was tested. Single crystal X-ray diffraction confirmed that an oxidation can convert a nonplanar dihydropyridine ( 1 ) that exhibits weak 1-D intermolecular interactions into a planar pyridine ( 2 ) that exhibits significant 1-D π-stacking interactio…
We review the implementation of quantum information processing using quantum spins and pulsed spin resonance techniques. Molecular magnets, nanoscale clusters of coupled transition metal ions, offer various potential advantages over other spin systems as the building blocks of a quantum computer. We describe the strat…
Colloidal quantum dots (QDs) have a large fraction of their atoms arrayed on their surfaces and are capped with bifunctional ligands, which make their photoluminescence highly sensitive to potential charge transfer to or from the surrounding environment. In this report, we used peptides as bridges between CdSe-ZnS QDs…
We have characterized the steps involved in silk assembly from the protein solution into beta-type fibers by a combination of small-angle and wide-angle X-ray scattering and Raman spectroscopy. The aggregation process was studied in a concentric flow microfluidic cell, which allows mimicking the spinning duct. The fib…
A single-layer polymer stabilized liquid crystal (PSLC) film reflecting both right- and left-circularly polarized light has been developed by a wash-out/refill method. The PSLC film was achieved by prefabricating the polymer network with a left-handed helical structure and then refilling a cholesteric liquid crystal w…
Complete automation of the macromolecular crystallography experiment has been achieved at SSRL through the combination of robust mechanized experimental hardware and a flexible control system with an intuitive user interface. These highly reliable systems have enabled crystallography experiments to be carried out from…
A family of layered lanthanide hydroxyhalide intercalation hosts, Ln 2 (OH) 5 X·1.5H 2 O (X = Cl, Br; Ln = Y, Dy, Er, Yb), has been synthesized under hydrothermal conditions and their crystal structure determined. These are the first structures for the m = 1 members of the Ln 2 (OH) 6− m (A) m · n H 2 O family of inte…
Both the formation mechanism and the origin of the two-dimensional electron gas (2DEG) in ZnMgO/ZnO heterostructures have been investigated. The 2DEG in the heterostructures was confirmed to originate from polarization-induced charge and was found to be dominant for transport at low temperatures as well as room temper…
Abstract Polystyrene (PS) was compounded with graphite that possesses high thermal conductivity and layer structures, and the PS/graphite thermal conductive nano‐composites were prepared. Thermal conductivity of PS improved remarkably in the presence of the graphite, and a much higher thermal conductivity of 1.95 W/m…