Materials Literature
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Idiomorphic and high quality Na 2 Ti 6 O 13 whiskers were easily grown by the rapid cooling of a NaCl flux. Environmentally friendly whisker growth was conducted by heating a mixture of solute (Na 2 CO 3 + TiO 2 ) and flux (NaCl) at 1100 °C and holding at this temperature for 10 h. After that, the mixture was cooled a…
The employment of the anion of 2,6-diacetylpyridine dioxime (dapdoH2) as a pentadentate chelate in transition metal cluster chemistry is reported. The syntheses, crystal structures, and magnetochemical characterization are described for [Mn6O2(OMe)2(dapdo)2(dapdoH)4](ClO4)2 (1), [Mn6O2(OMe)2(dapdo)2(dapdoH)4][Ca(NO3)4…
Ultimate tensile strength and axial tensile modulus of single high-strength electrospun polyimide [poly(p-phenylene biphenyltetracarboximide), BPDA/PPA] nanofibres have been characterized by introducing a novel micro tensile testing method. The polyimide nanofibres with diameters of around 300 nm were produced by anne…
A low-cost and catalyst-free two-step approach has been developed to produce ZnO nanotubes (ZNTs) by simple thermal oxidation of Zn nanowires under 20 Pa at a low temperature of 400 °C. The growth mechanism of ZNTs is discussed in detail. The formation of these tubular structures is closely linked to the oxidation pre…
We have identified an important microstructural origin of the switching field distribution (SFD) in patterned Co∕Pd multilayer nanodots. In this study, we patterned a marked array of 115nm Co∕Pd nanodots on 50-nm-thick Si3N4 substrate. We identified the dots with unusually small and large (>2 standard deviations of th…
Umsetzungen von Silberthiolaten mit Se(SiMe3)2 oder S(SiMe3)2 in Gegenwart von zweizähnigen Phosphanen führen zu sehr großen Clustermolekülen mit verzerrten kugelförmigen Metallchalkogenidkernen von 2–4 nm Durchmesser, deren Oberfläche durch Thiolat- oder Phosphanliganden geschützt ist. Strukturanalysen zeigen, dass d…
Isomerization of azobenzene has been studied for many years, but some aspects are still unclear or controversial. This work provides further insight and clarifies the role that environmental parameters play in determining the reaction kinetics of azobenzene derivatives in solution. Detailed spectroscopic measurements…
Conventional diffractometry over the past decades has revealed that the ferromagnetic transition, an ordering of the magnetic moment, involves no crystal structure change in general; thus a cubic paramagnet has been considered to transform into a cubic ferromagnet upon a ferromagnetic transition. However, with high-re…
We fabricated metallic nanostructures directly on Si substrates through a hybrid nanoprocess combining atomic layer deposition (ALD) and a self-assembled anodic aluminum oxide (AAO) nanotemplate. ALD Ru films with Ru(DMPD)(EtCp) as a precursor and O(2) as a reactant exhibited high purity and low resistivity with negli…
To obtain an active-targeting carrier to cancer cells, folate-conjugated stearic acid grafted chitosan oligosaccharide (Fa-CSOSA) was synthesized by 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC)-mediated coupling reaction. The substitution degree is 22.1%. The critical micelle concentrations (CMCs) of Fa-CSOSA…
This paper reports on a novel heat treatment method for the creation of functionally graded near-equiatomic NiTi shape memory alloys. The method is an anneal within a temperature gradient after cold work, thus creating a structural gradient within the matrix of the alloy. It is based on the principle that the transfor…
We have carried out an isotope study on the band gap and radiative transition spectra of boron nitride nanotubes (BNNTs) using both experimental and theoretical approaches. The direct band gap of BNNTs was determined at 5.38 eV, independent of the nanotube size and isotope substitution, by cathodoluminescences (CL) sp…
Synthesis of a scandium dimethylbenzyl complex supported by a ferrocene diamide ligand was accomplished by alkane elimination from Sc(CH 2 Xy-3,5) 3 (THF) 2 . The scandium dimethylbenzyl complex Sc(fc[NSi( t -Bu)Me 2 ] 2 )(CH 2 Xy-3,5)(THF), 2-(CH 2 Xy-3,5)(THF), was used as a starting material for the synthesis of th…
Bismuth (Bi) thin films of various microstructures were synthesized by thermal evaporation at varying substrate temperatures. The substrate temperature strongly affects the surface morphology and crystalline orientation of the Bi thin films. Peak shift and broadening of the Raman bands ( E g and A 1g modes) observed w…
The hydrothermal reaction of (L)-ethyl lactate (Lig-Et) with Tb(ClO(4))(3).6H(2)O gives colorless block (Lig)(2)Tb(H(2)O)(2)(ClO(4)) (1), in which 1 displays a laminar 2D framework. Ferroelectric and magnetic property measurements reveal that 1 probably is the first example of two "ferroic" metal-organic frameworks. F…
This article reports an unambiguous demonstration that bulk-separated metallic single-walled carbon nanotubes offer superior performance (consistently and substantially better than the as-produced nanotube sample) in conductive composites with poly(3-hexylthiophene) and also in transparent conductive coatings based on…
We investigated the ultrafast terahertz response to the photoexcitation for vanadium dioxide single crystals and thin films using the optical-pump terahertz-probe technique at room temperature. The optical excitation induced an ultrafast decrease of the transmittance of the terahertz radiation within 0.7ps. Since we e…
A spatial transformation technique is applied to an important class of two-dimensional electromagnetic cloaks that do not possess rotational symmetry around the longitudinal axis. These cloaks are based on an eccentric elliptic annular geometry, which represents a generalization of previously published cloaking config…
Multiferroic BiFeO3 epitaxial films with thicknesses ranging from 40to960nm were grown by pulsed laser deposition on SrTiO3 (001) substrates with SrRuO3 bottom electrodes. X-ray characterization shows that the structure evolves from angularly distorted tetragonal with c∕a≈1.04 to more bulklike distorted rhombohedral (…
Previous studies from our group demonstrated visual evidence that endocytosis mechanism(s) contribute to the internalization and intracellular trafficking of cationic and anionic poly(amidoamine) (PAMAM) dendrimers across Caco-2 cells. These dendrimers colocalized with established endocytosis markers, which suggested…