Materials Literature
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In this paper, we report on field-effect experiments in ${\text{La}}_{0.7}{\text{Sr}}_{0.3}{\text{MnO}}_{3}$ side-gate channels patterned on ultrathin epitaxial films having thickness ranging from 12 to 4 unit cells. Transport mechanisms and competition between phases, under the effect of electric and magnetic fields,…
The alignment of lamellar block copolymer in cylindrical confinement is investigated. Liquefied polystyrene-block-poly(methyl methacrylate) copolymer films exposed to an electric field form micrometer-sized columns with the lamellae aligned parallel to the cylinder axis. The lateral arrangement of the lamellae is dete…
Abstract Luminescent composite materials based on semiconductor nanocrystals (NCs) with ionic liquid and subsequently with an ionic liquid‐based polymer have been prepared. Cationic CdTe NCs passivated with thiocholine bromide (TCB) were prepared in an aqueous phase and easily transferred to hydrophobic ionic liquids…
The water repellency and self-cleaning ability of many biological surfaces has inspired many fundamental and practical studies related to the development of synthetic superhydrophobic surfaces. However, the investigation of such substrates made of biodegradable polymers has been scarce. Simple approaches based on a si…
Vertically aligned multi-walled carbon nanotube (MWCNT) arrays fabricated by xylene pyrolysis in anodized aluminum oxide (AAO) templates without the use of a catalyst were integrated into a resistive sensor design. Steady state sensitivities as high as 5% and 10% for 100 ppm of NH(3) and NO(2), respectively, at a flow…
Sequential interpenetrating polymer networks (IPNs) were prepared using polyurethane produced from a canola oil based polyol with primary terminal functional groups and poly(methyl methacrylate) (PMMA). The properties of the material were studied and compared to the IPNs made from commercial castor oil using dynamic m…
In this paper, we report a strategy for hybrid multiferroicity at nanoscale. Multiferroic NiFe2O4–Pb(Zr0.52Ti0.48)O3 composite nanofibers are synthesized by a sol-gel process and electrospinning, with fiber diameters ranging from 100 to 400 nm. Energy dispersive spectroscopy and transmission electron microscopy indica…
A low complexity computational model of the current-voltage characteristics for graphene nanoribbon (GNR) field effect transistors (FET), being able to simulate a hundred points in a few seconds using a personal computer, is presented. For quantum capacitance controlled devices, self-consistent calculations of the ele…
A comparison of the solid structures of three novel trinuclear sandwich Pt 2Pb systems (NBu 4) 2[{Pt(C identical withCTol) 4} 2Pb(OH 2) 2] 1, [{Pt(bzq)(C identical withCPh) 2} 2Pb] 2, and (NBu 4)[{Pt(bzq)(C identical withCC 6H 4-CF 3-4) 2} 2Pb(O 2ClO 2)] 4 (NBu 4[ 3.(O 2ClO 2)]) with that of the previously reported (N…
A high number density (∼1023 m−3) of α-Fe nanocrystals with a size below 10 nm has been induced in amorphous Nd9Fe85B6 by high-pressure torsion deformation (HPTD) at room temperature. The amorphous Nd9Fe85B6 subjected to HPTD presents a quite different crystallization behavior as compared with the nondeformed alloy. T…
Nearly spherical polycrystalline Si nanoparticles with 20 nm diameter were fabricated based on laser ablation of silicon wafer immersed in sodium dodecyl sulfate aqueous solution. Such Si nanoparticles consist of disordered areas and ultrafine grains of 3 nm in mean size and exhibit significant photoluminescence in bl…
The phase transition and the phase stability in 0.68Pb(Mg1/3Nb2/3)O3–0.32PbTiO3 (PMN-0.32PT) single crystals under different electric fields were investigated over a temperature range from −20 to 200 °C using the dielectric property. Crystals with different orientations were used in the research. First, it is found th…
Intelligente Basen: Durch Einbau eines photochromen, abschirmend wirkenden Azobenzolbausteins kann eine Piperidinbase zwischen einer sterisch abgeschirmten, inaktiven Form und einer zugänglichen, reaktiven Form hin und her geschaltet werden (siehe Schema; grau C, weiß H, rot O, blau N). Es ist daher möglich, die Basiz…
Dielectric properties, microstructures, and phase transition behaviors of α and β phases of CaxBa1−xNb2O6 (x=0.22, 0.30, and 0.38) ceramics were investigated. All the three compositions had partially filled tungsten-bronze structure (TTB) and relatively high Curie temperatures (up to 345°C) compared with Sr1−xBaxNb2O6…
While the structure of the set of stationary solutions of the Cahn-Hilliard equation on one-dimensional domains is completely understood, only partial results are available for two-dimensional base domains. In this paper, we demonstrate how rigorous computational techniques can be employed to establish computerassiste…
Omni-directional electromagnetic field concentrators have been recently reported by Marco Rahm et al. [Photon. Nanostruct.: Fundam. Appl. 6, 87 (2008)] based on form-invariant coordinate transformations related to its Jacobi transformation matrix. Using transverse-electric wave illumination, we reduced the complex mat…
Combinatorial assembly of protein domains plays an important role in the evolution of proteins. There is also evidence that protein domains have come together from stable subdomains. This concept of modular assembly could be used to construct new well folded proteins from stable protein fragments. Here, we report the…
PURPOSE: Paclitaxel encapsulated in cationic liposomes (EndoTAG-1) is a vascular targeting formulation for the treatment of solid tumors. It triggers intratumoral microthrombosis, causing significant inhibition of tumor perfusion and tumor growth associated with endothelial cell apoptosis. Here, we quantified the effe…
Vanadium oxide thin films were grown on Au(111) by the oxidation of vapor-deposited V layers with 50 mbar of oxygen. The structure, composition, and thermal stability of the films have been investigated with scanning tunneling microscopy, low energy electron diffraction, photoemission spectroscopy, near-edge X-ray abs…
In this paper, we study the processes of exciton transfer in coupled nanoparticles and nanowires, and obtain convenient equations and numerical results for energy-transfer rates. For large distances, the energy-transfer rates are proportional to $1/{d}^{5}$, where $d$ is the nanoparticle-nanowire distance. Our models…