Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
In this paper, we report the facile synthesis of single-crystalline BaTiO 3 nanowires at low temperature (50 °C) in ethanol solution by using inorganic raw materials. The nanowires have a uniform diameter of 100 nm and a length up to 10 μm. X-ray diffraction patterns confirmed that it is the tetragonal phase of BaTiO…
Complex porous fluorescein microspheres with hierarchical superstructures and relievo-like complex fluorescein crystals can be easily generated by a recrystallization/reprecipitation method using poly(allylamine hydrochloride) (PAH) and poly(sodium 4-styrenesulfonate) (PSS) as structure directing agents at room temper…
This paper reports the preparation of Eu 3+:CaMoO 4 nanocrystals by the microemulsion-mediated hydrothermal method. The synthesized Eu 3+:CaMoO 4 nanocrystals were characterized by XRD, transmission electron microscopy, high-resolution transmission electron microscopy, excitation, and emission spectra. The result show…
Flagella nanotubes present on the surface of E. coli bacteria were bioengineered to display arginine-lysine and glutamic acid-aspartic acid peptide loops. These protein bionanotubes were demonstrated to self-assemble, layer-by-layer, by atomic force microscopy (AFM) on gold-coated mica and quartz surfaces. Flagella wi…
Porous anodic aluminum oxide (AAO) templates were prepared by a two-step aluminum anodic oxidation process. Nanowires, microspheres, and hexagonal nanoplates of PbO were successfully prepared by an improved sol–gel method combined with AAO templates. On the anodized external surface and the surface-dissolved barrier l…
Facile synthesis of nanometer-sized germania crystals and amorphous germania nanoparticles (ca. 1 nm) is investigated through hydrolysis of germanium tetraethoxide and subsequent condensation of germania in both pure water and aqueous lysine solutions. Germanium tetraethoxide rapidly hydrolyzes in pure water, leading…
The thermal stability of solutions of methyl ethyl ketone peroxide (MEKPO) dissolved in dimethyl phthalate (DMP), in the presence of nitric acid (HNO 3 ) and sodium nitrate (NaNO 3 ) as contaminants, was studied. MEKPO is extensively employed in the chemical industries, but despite its large use several severe acciden…
Polyhydroxyalkanoate (PHA) inclusions are polymeric storage inclusions formed in some bacterial species when carbon levels are high but levels of another essential nutrient, such as nitrogen, are low. Though much is known about PHA synthesis, little is known about inclusion structure. In this study, atomic force micro…
We have successfully fabricated single-crystalline hollow NiO crystals with well-defined octahedral morphology. With detailed investigations by using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and thermogravimetric analysis, we propose a growth mechanism of the hollow octahedra.…
PolyHIPEs show great promise as tissue engineering scaffolds due to the tremendous control of pore size and interconnectivity afforded by this technique. Highly porous, fully biodegradable scaffolds were prepared by polymerization of the continuous phase of high internal phase emulsions (HIPEs) containing the macromer…
Self-assembly of symmetric diblock copolymers confined in spherical nanopores is studied using simulated annealing Monte Carlo simulations. The dependence of the self-assembled morphologies and chain conformations on the degree of confinement and the strength of the surface interactions is examined systematically. A r…
This paper reports the effects of the aspect ratio of zinc oxide (ZnO) nanowires on the performance of ZnO-nanowire-based dye-sensitized solar cells (DSSCs). ZnO nanowire-structured photoanodes can improve the efficiency of the electron collection of DSSCs, but their performances significantly depend on the aspect rat…
Selective sensing of terahertz (THz) radiation by beryllium and silicon delta-doped GaAs/AlAs multiple quantum wells (MQWs) is demonstrated. A sensitivity up to 0.3 V/W within 0.5{4.2 THz in silicon- and up to 1 V/W within 4.2-7.3 THz range in beryllium-doped MQWs at liquid helium temperatures is shown. The built-in e…
The Heisenberg antiferromagnet on the Kagomé lattice is studied in the framework of Schwinger-boson mean-field theory. Two solutions with different symmetries are presented. One solution gives a conventional quantum state with $\mathbf{q}=0$ order for all spin values. Another gives a gapped spin liquid state for spin…
The authors demonstrate selective detection of terahertz radiation employing beryllium delta-doped GaAs/AlAs multiple quantum wells. The sensitivity up to 1 V/W within 4.2-7.3 THz range at liquid helium temperatures is reached. The Franz-Keldysh oscillations observed in photo- and electro-reflectance spectra allowed o…
Abstract High‐quality poly(diphenyl ether) (PDPE) films with electrical conductivity of 4.4 × 10 −1 S cm −1 were synthesized electrochemically by direct anodic oxidation of diphenyl ether (DPE) in boron trifluoride diethyl etherate (BFEE) containing 5% concentrated sulfuric acid (SA) (by volume). The oxidation potenti…
Soluble eggshell proteins were used as a reinforcing material of electrospun micro/nanofibers for tissue engineering. A biocomposite composed of poly(epsilon-caprolactone) (PCL) micro/nanofibers and soluble eggshell protein was fabricated with a two-step fabrication method, which is an electrospinning process followed…
Covalent sidewall functionalization of single-walled carbon nanotubes (SWNTs) via photoreduction of aromatic ketones by alcohols is reported for the first time. Irradiation of benzophenone, benzhydrol and SWNTs in benzene resulted in covalent attachment of benzhydrol to the sidewalls of the SWNTs. A variety of tools w…
We have investigated the electronic transport properties of resistivity, magnetoresistance and the Hall effect on epitaxial and polycrystalline Fe 3 Si thin films. The electrical transport measurements reveal the microstructure which has not been clarified from x-ray diffraction and/or scanning electron microscopy. We…
Using single molecule polarization spectroscopy, we investigated the alignment of a polymer solute with respect to the liquid crystal (LC) director in an LC device while applying an external electric field. The polymer solute is poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (or MEH-PPV), and the LC solv…