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 letter, a top-gated field-effect device (FED) manufactured from monolayer graphene is investigated. Except for graphene deposition, a conventional top-down CMOS-compatible process flow is applied. Carrier mobilities in graphene pseudo-MOS structures are compared to those obtained from the top-gated Graphene-FE…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConjugated Polymer-Based Organic Solar CellsSerap Günes, Helmut Neugebauer, and Niyazi Serdar SariciftciView Author Information Linz Institute of Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University of Linz, Austria Cite this: Chem. Rev. 2007, 107, 4, 1…
Entire cotton picking in India is manual. It is not only a slow process but involves extremely tedious hard work. Due to impending scarcity of labour, mechanization of cotton harvesting is considered to be of vital importance. A study was conducted on the performance of a two-row self-propelled cotton picker at differ…
Alternating current dielectrophoresis has attracted considerable attention as a possible candidate to separate single-walled carbon nanotubes according to electronic types. Recently, the significant effect of surface charge on the polarizability of semiconducting nanotubes was demonstrated using comparative Raman spec…
New metal-Schiff-base coordination polymer films were prepared using multiple sequential adsorption of metal ions and salen-based ligand molecules. As the ligands, bis-bidentate 5,5'-methylene-bis(N-methylsalicylidenamine) (MBSA), tetra-bidentate N,N',N' ',N' ''-tetrasalicylidene-polyamidoamine (TSPA), and multi-biden…
The effect of <TEX>$MnO_{2}$</TEX> as a sintering additive on the microstructures and the piezoelectric properties, especially mechanical quality factor, of 0.05 Pb<TEX>$(Sb_{0.5}Nb_{0.5})O_{3}$</TEX>-0.95 Pb<TEX>$(Zr_{0.52}Ti_{0.48})O_{3}$</TEX> (PSN-PZT) piezoelectric ceramics was investigated. The samples were sint…
The compounds alpha-TlBiP2Se6 (I), beta-TlBiP2Se6 (II), TlBiP2S6 (III), Tl3Bi3(PS4)4 (IV), TlBiP2S7 (V), and Tl3Bi(PS4)2 (VI) were synthesized, and the structures of I-V were determined by single-crystal X-ray diffraction analysis. The structure of I features infinite chains. Those of compounds II, III, and V are laye…
The initial stages of the uptake of molecular oxygen on V(100) single-crystal surfaces were characterized by temperature programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS), and ion scattering spectroscopy (ISS). As in previous reports on this system, a small amount of oxygen contamination was always d…
Terahertz time-domain spectroscopy was employed to investigate photogenerated excitons in PbSe and CdSe quantum dots (QD) of radii less than their exciton Bohr radius. The exciton response was found to be “atom”-like and rise with increasing the carrier effective mass. Excitons in CdSe were found to be about two times…
The optical properties of an atom located near a cluster of two arbitrarily arranged nanospheres of an arbitrary composition are studied. Changes in the spontaneous decay rates of excited states and emission frequency shifts are considered for different orientations of the dipole moment and different positions of the…
Cyanogel coordination polymers are amorphous Prussian blue analogues formed in a hydrogel state by the reaction of a chlorometalate with a cyanometalate in aqueous solution. At elevated temperatures, cyanogels thermally autoreduce to form transition-metal alloys. This work demonstrates the general nature of this type…
The effect of added nonadsorbing macromolecules on the phase behavior of suspensions of electrostatically stabilized cellulose nanocrystals is examined. Triphasic isotropic−isotropic−nematic equilibria develop in cellulose nanocrystal suspensions to which a mixture of dextran and blue dextran is added. Phase diagrams…
A series of polymers with 4-perfluoroalkyl-modified azobenzene side groups was investigated for its light-induced changes in surface properties. The ultraviolet (UV) light activated trans to cis isomerization of the azobenzene group, and the influence of molecular order and orientation on this process were studied usi…
We demonstrate here the rational design strategy to control the length of 1-dimensional beta-sheet peptide nanoassembly. We synthesized the beta-sheet peptides with attached coils and carbohydrates. We reasoned that the bulkiness of the coils affects the final length of the assembled beta-sheet peptide nanostructures…
Bacillus sphaericus cannot metabolize sugar since it lacks several of the enzymes necessary for glycolysis. Our results confirmed the presence of a glucokinase-encoding gene, glcK, and a phosphofructokinase-encoding gene, pfk, on the bacterial chromosome and expression of glucokinase during vegetative growth of B. sph…
Sluggish or impractical Diels−Alder reactions of a maleimide modified-MPN with a series of dienes of varying electronic and steric demands at ambient pressure and temperature proceed under hyperbaric conditions in less than 10 min without altering the gold core of the nanoparticle or its inherent physical properties.
The insertion of fluorescently labeled thiols into the protecting self-assembled monolayer on the surface of gold nanoparticles through place exchange reactions and the effects of this insertion on the photophysical properties of the fluorophores are investigated. Analysis of solution-phase fluorescence data using a d…
Bubbles impart a very unique texture, chew, and mouth-feel to foods. However, little is known about the relationship between structure of such products and consumer response in terms of mouth-feel and eating experience. The objective of this article is to investigate the sensory properties of 4 types of bubble-contain…
We report the influence of polyelectrolyte (PE) multilayer films prepared from poly(styrene sulfonate)-poly(acrylic acid) (PSS-PAA) blends, deposited in alternation with poly(allylamine hydrochloride) (PAH), on film wettability and the adsorption behavior of the protein immunoglobulin G (IgG). Variations in the chemic…
Sandcastle worms Phragmatopoma californica build mound-like reefs by sticking together large numbers of sand grains with cement secreted from the building organ. The cement consists of protein plus substantial amounts of calcium and magnesium, which are not invested in any mineral form. This study examined the effect…