Materials Literature
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Experimental studies demonstrated that alcohols and amines can undergo a CF(3)COOAg-catalyzed nucleophilic addition at the outer C=N position of Ag(III) NCPs, leading to C-3-alkoxylated Ag(III) NCPs, which supports the computational result that the C=N bond on the periphery of Ag(III) NCPs is partially isolated from t…
A laboratory study was performed to assess the effects of sulfur poisoning and desulfation temperature on the NO conversion of a LNT+(Cu/SCR) in-situ system. Four LNT+(Cu/SCR) systems were aged for 4.5 hours without sulfur at 600, 700, 750, and 800°C using A/F ratio modulations to represent 23K miles of desulfations a…
Poly(3,4-ethylenedioxythiophene) and tungsten oxide films with enhanced electrochromism were prepared by templated electrodeposition on flexible transparent carbon nanotube electrodes. The nanostructured porous architectures obtained by coating the nanotube templates exhibited high contrast with faster switching respo…
The effects of molecular structure and architecture of multiple‐functional groups, citric acid‐type compounds on the yield stress of 55 wt%α‐Al 2 O 3 dispersions were evaluated. They are cis ‐ and trans ‐aconitic (or dehydrated citric) acids, and propane‐1,2,3 tricarboxylic acid. These compounds possessed distinct dif…
DME has lower energy content per unit volume than that of light oil (typical petroleum based diesel fuel). Roughly 1.8 times the quantity of DME is required to obtain equivalent content of light oil. DME also exhibits higher compressibility and much lower viscosity than light oil, so high pressure injection is not eas…
Cooperative effects play a vital role in protein adsorption events on biological interfaces. Despite a number of studies in this field molecular adsorption mechanisms that include cooperativity are still under debate. In this work we use a Monte Carlo-type simulation to explore the microscopic details behind cooperati…
We investigate the bending properties of carbon nanoribbons by combining continuum elasticity theory and tight-binding atomistic simulations. First, we develop a complete analysis of a given bended configuration through continuum mechanics. Then, we provide by tight-binding calculations the value of the bending rigidi…
Dense ensembles of monodisperse hard spheres spontaneously assemble into regions of local crystalline order (grains) that are separated by relatively disordered grain-boundary (GB) regions. It is well known that grains and grain boundaries (GB) profoundly affect the material properties of polycrystalline materials and…
Size miniaturization of microwave filters is highly\ndesirable in the today’s rapid changing communications world.\nSplit ring resonators (SRRs) have attracted much interest in\nrecent years as key constituent particles for the design of\neffective media with negative magnetic permeability (μeff < 0) or\nleft-handed m…
Abstract Universal strategies for synthesizing one‐dimensional organic nanomaterials are of fundamental importance in the development of more flexible, cheaper and lighter electronics. Charge‐transfer (CT) complexes, the major kind of organic conductors, are in the long‐term attractive materials owing to their unique…
Strahlende Zukunft: Die Reaktion von Diazomethan mit N,N,N′,N′-Tetraalkylrhodamin-Säurechloriden führt zu 2-Diazo-2,3-dihydro-1H-indenspiro[1,9′]-9H-xanthen-3-onen als einer neuen Klasse maskierter Rhodamine. Diese Farbstoffe ermöglichen neue Mikroskoskopieverfahren, die auf der stufenweisen Aktivierung und Detektion…
Particulate Matter (PM) emissions from gasoline direct injection (GDI) engines are becoming a concern and will be limited by future emissions regulations, such as the upcoming Euro 6 legislation. Therefore, PM control from a GDI engine will be required in addition to effective reduction of HC, CO and NOx emissions. Th…
The reaction between the mononuclear [ReO(salen)(OMe)] (salen(2-) = N,N'-ethan-1,2-diylbis(salicylidenamine) dianion) and Dy(hfac)(3).2H(2)O (hfac(-) = 1,1,1,5,5,5-hexafluoroacetylacetonate anion) complexes lead to the formation of a compound with the formula {[Re(salen)](2)O(3)[Dy(hfac)(3)(H(2)O)](2)}(CHCl(3))(2)(CH(…
Physical and functional properties of nonwoven textiles and other fiberlike materials depend strongly on the number and type of fiber-fiber interactions. For nanoscale polymeric fibers in particular, these interactions are governed by the surfaces of and contacts between fibers. We employ both molecular dynamics (MD)…
Physical properties of a nanodielectric composed of in situ synthesized titanium dioxide (TiO2) nanoparticles (≤5 nm in diameter) and a cryogenic resin are reported. The dielectric losses were reduced by a factor of 2 in the nanocomposite, indicating that the presence of small TiO2 nanoparticles restricted the mobilit…
(K 0.45 Na 0.55 )NbO 3 –0.5 mol% K 4 CuNb 8 O 23 [KNN–KCN] solid solution was synthesized and its shear mode dielectric and piezoelectric properties were characterized as a function of temperature. The doped KNN material was found to possess comparable electric resistivity, piezoelectric, and electromechanical propert…
The crystal structure and morphology of a series of linear aliphatic polyurethanes with generic formula −(CH 2 ) n OCONH− and containing from 5 to 12 methylene units have been investigated by using TEM combined with X-ray and electron diffraction analysis. Lamellar crystals with a thickness ranging between 5 and 10 nm…
We report Raman spectroscopy measurements on ZnO crystals grown by the vapor transport method and annealed. Vacuum annealing is found to yield single crystals with ultra low density of defects. We focus on the optical E2 phonon linewidth temperature dependence in the 10–500 K range. The linewidth decrease at low tempe…
The mechanism of gelation of 50/50 w/w mixtures of guanosine (G) and 2',3',5'-tri-O-acetylguanosine (TAcG) in aqueous 0.354 M KCl was investigated using a combination of static light scattering (SLS), polarized and depolarized dynamic light scattering (VV and VH DLS), small-angle neutron and X-ray scattering (SANS and…
This paper focuses on the effect of aluminum additive on electrical properties of ZnO varistors. From the normalized current density versus electric field ( J–E ) curves, the influence of Al ionic additive on the leakage current and the residual voltage ratio of the sample is very intuitive. The barrier height of the…