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。
Titanium L 3,2 and O K electron energy loss near-edge structures (ELNES) of seven Ti oxides have been measured in a transmission electron microscope to obtain information on the valence state and site geometry of Ti. The coordination of Ti in all phases studied is octahedral, whereas the valence states occurring are T…
The impact of carbon nanotubes (CNTs) on the aquatic environment was investigated by examining the properties of raw CNTs under several environmental conditions and using developing zebrafish (Danio rerio) embryos. The agglomerate size for single-walled CNTs (SWCNTs) was significantly larger at pH 11 or greater and wa…
Wedge- and dumbbell-shaped amphiphilic perylene bisimides PBI 1 − 4 were synthesized. The wedge-shaped PBI 1 and PBI 2 and dumbbell-shaped PBI 4 self-assemble into micelles, and rod aggregates in aqueous solution, respectively. Interestingly, the co-self-assembly of wedge-shaped PBI 1 with dumbbell-shaped PBI 3 genera…
Small-angle scattering (SAS) is frequently employed for screening large numbers of samples and for studying these samples under different conditions, including space- and time-resolved analysis. These measurements produce immense amounts of data, especially on modern high-flux and high-brilliance sources (e.g. third-g…
We highlight recent developments in hydrogel materials with biological responsiveness built in. These ‘smart’ biomaterials change properties in response to selective biological recognition events. When exposed to a biological target (nutrient, growth factor, receptor, antibody, enzyme, or whole cell), molecular recogn…
The different hydrogen evolution rates for Mg immersed in simulated body fluid solutions with and without phosphates signify that the constituents of the body fluid could play different roles in the biodegradation of a magnesium implant. Currebtly, there is still a lack of fundamental understanding of the corrosion be…
Polymer nanocomposites offer significant potential in the development of advanced materials for numerous applications. These novel materials benefit from the synergy between filler particles and polymer chains that are on similar length scales and the large quantity of interfacial area relative to the volume of the ma…
With the increased emphasis on both reliability and multi-functionality in the aerospace industry, active materials are fast becoming an enabling technology capturing the attention of an increasing number of engineers and scientists worldwide. This article reviews the class of active materials known as shape memory al…
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…