Materials Literature
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Polypyrrole (PPy) is a conjugated polymer that displays particular electronic properties including conductivity. In biomedical applications, it is usually electrochemically generated with the incorporation of any anionic species including also negatively charged biological macromolecules such as proteins and polysacch…
A scattering of silver: Polyhedral silver nanocrystals display complex and distinct scattering signatures dictated by their shape and size (see picture). The ability to engineer specific plasmon modes should have profound consequences for surface-enhanced Raman spectroscopy, subwavelength optics, and plasmonic transpo…
Abstract Parallel capacitors of Ba x Sr 1– x TiO 3 ( x = 0.01 and 0.05) were fabricated, and their characteristics as a capacitance thermometer were investigated. The dimensionless temperature sensitivities at 2.5 K for x = 0.01 and 0.05 were found to be 0.041 and 0.026, respectively. Particularly, the value for a cap…
This paper reviews the CT saturation problems associated with mechanical layout complications. The error prediction method is proposed, for the prediction of transformation errors, which is independent of the often very complicated magnetic configurations in which window type CTs are expected to operate. The technique…
The title compound, C 27 H 14 F 10 S 2 , is a new symmetrical photochromic diarylethene derivative which can be used potentially for optical recording media and other optoelectronic device materials. The distance between the two reactive C atoms is 3.571 (4) Å. The dihedral angles between the thiophene rings and the a…
Received 15 June 2006DOI:https://doi.org/10.1103/PhysRevLett.96.249902©2006 American Physical Society
The clay mineralogy and heavy metal/metalloid (As, Pb and Cu) contents of soils developed on the various rock units in a central highlands environment in Victoria (Creswick, Australia) have been investigated. The clay minerals identified showed an order of abundance as: kaolinite ≫ illite > smectite > mixed-layer (ML)…
Ag3SnCuP10 was synthesized from a stoichiometric mixture of copper, silver, tin, and red phosphorus, with SnI4 added as a mineralization agent. Cubic Ag3SnCuP10, space group F3m (No. 216) with lattice parameter a = 10.503(1) A and Z = 4, consisting of orientationally disordered [Ag3Sn] heteroclusters and adamantane-ty…
A novel family of diaminobutane-based poly(propyleneamine) ferrocenyl dendrimers with aza-crown ethers, DAB-dend-(Fc-A18C6) x ( 2 − 5: x = 2, 4, 8, 16; Fc-A18C6 = {[η 5 -C 5 H 4 CONH]Fe[η 5 -C 5 H 4 CONCH 2 CH 2 (OCH 2 CH 2 ) 5 ]}), has been prepared by reaction of the novel functionalized ferrocenyl derivative {[η 5…
Abstract Water absorption and other properties of polyamides can potentially be modified by blending with polyesters. The compatibility of a polyester ionomer melt‐blended with nylon‐6 is studied in this article, examining the effect of blending upon crystallization behaviors, morphology, thermal/mechanical properties…
Let's twist again! Torsion is a chiral deformation. It can turn achiral objects into chiral ones, and discriminate between left-handed and right-handed chiral objects. This article focuses on the significance of carbon nanotubes which can be elastically twisted by 180° without breaking and act as a single-molecule tor…
Ring frei! Ein voll konjugiertes Cyclododeca-2,7-carbazol wurde um ein Porphyrin-Templat synthetisiert und im Anschluss der leere Makrocyclus (vorn im Bild) freigesetzt. Einzelmoleküle wurden mittels Rastertunnel- (STM) und Rasterkraftmikroskopie charakterisiert (siehe STM-Aufnahme). Die Makrocyclen organisieren sich…
Using calculations from first principles, we discuss the interplay between structure and functionality at metal-insulator interfaces using the paradigmatic example of the junctions between various metals (Ag, Pd, Pt, Ni, Cu, Al) and binary alkaline earth crystalline oxides ($\mathrm{BaO}$, $\mathrm{CaO}$, and $\mathrm…
Molecular dynamics computer simulation models are employed to study the direct filling of single-walled carbon nanotubes (which vary in diameter) with an archetypal metal trihalide, LaCl3. The use of relatively simple potential models allows the investigation of details of both the atomistic filling mechanism and the…
Diatoms were examined in twelve ponds and four small lakes of the Kathmandu Valley, Nepal, to assess their biodiversity, response to environmental conditions and potential use as bioindicators for water quality. They were investigated from different substrates and relationships with water chemistry and habitat charact…
Carbon is a typical impurity in thin films fabricated by metal-organic chemical-vapor deposition (MOCVD). The role of carbon in undoped and nitrogen-doped ZnO thin films was studied experimentally and theoretically to understand the possible compensation effects. ZnO thin films are fabricated by low-pressure MOCVD usi…
Different sizes of CdTe semiconductor nanoparticles were prepared in aqueous solution. These nanoparticles exhibit narrow fluorescence with full width at half-maximum (FWHM) of 35-45 nm that spans the visible spectrum, and they also have high PL quantum yield with high resistance to photodegradation. In addition, CdTe…
Diameter-controllable single-crystalline ZnO nanowires (NWs), with the [0001] growth direction in the plane, have been fabricated by using thermal evaporation method. The as-grown NWs with diameters of $\ensuremath{\sim}40\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ were implanted with various amounts of Co ions. These ${\…
Abstract The influence of the melt‐blending conditions on the structural, rheological, and interfacial properties of modified montmorillonite/Polyamide‐12 nanocomposites has been studied performing transmission electron microscopy observation combined with X‐Ray diffraction and rheological experiments. In the dilute r…
Abstract Simultaneous synthesis of H 2 and ZnO nanoparticles is investigated by steam‐hydrolysis of Zn vapor in a hot‐wall aerosol flow reactor with separated evaporation, cooling, and reaction zones. Superheated Zn vapor was carried by Ar into a tubular, quartz reactor where it was mixed and quenched by a superheated…