Materials Literature
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It is proposed herein that in order to obtain ultralarge-pore ordered mesoporous silicas using surfactant-templated synthesis with micelle expanders, one should select a micelle swelling agent with a moderate swelling ability to achieve an appreciable pore diameter enlargement while avoiding the formation of heterogen…
A white-light-emitting organogel is designed by the controlled self-assembly of a bischolesterol-functionalized OPV donor that allows slow energy migration and partial energy transfer in the gel state to an encapsulated acceptor. The white-light emission occurs because of the combination of blue-light emission from th…
Abstract A large variety of transport properties have been observed at the interface between the insulating oxides SrTiO 3 and LaAlO 3 such as insulation, 2D interface metallicity, 3D bulk metallicity, magnetic scattering, and superconductivity. The relation between the structure and the properties of the SrTiO 3 /LaA…
We study edge states in graphene systems where a bulk energy gap is opened by inversion symmetry breaking. We find that the edge bands dispersion can be controlled by potentials applied on the boundary with unit cell length scale. Under certain boundary potentials, gapless edge states with valley-dependent velocity ar…
The field of nanotechnology opens up novel potential applications for agriculture. Nanotechnology applications are already being explored and used in medicine and pharmacology, but interest for use in crop protection is just starting. The development of nanodevices as smart delivery systems to target specific sites an…
The enhancement mechanism due to the molecule-surface chemical coupling in surface-enhanced Raman scattering (SERS) has been characterized using time-dependent density functional theory. This has been achieved with a systematical study of the chemical enhancement of meta- and para-substituted pyridines interacting wit…
Based on the concept of complementary media, we propose an invisibility cloak operating at a finite frequency that can cloak an object with a prespecified shape and size within a certain distance outside the shell. The cloak is comprised of a dielectric core and an "antiobject" embedded inside a negative index shell.…
The self-assembly and self-organization of porphyrins and related macrocycles enables the bottom-up fabrication of photonic materials for fundamental studies of the photophysics of these materials and for diverse applications. This rapidly developing field encompasses a broad range of disciplines including molecular d…
Der Extrakt ERr 731 aus der Rhapontikrhabarberwurzel wird bei Menopausenbeschwerden eingesetzt. Zwei placebokontrollierte Doppelblindstudien mit perimenopausalen Frauen belegen eine signifikante Reduktion der Beschwerden. Beobachtungsstudien zeigen keine Endometriumhyperplasie oder Zunahme der Brustdichte. Wirksamkeit…
Results are presented of comparative trials of insulation systems in traction motor armature impregnated by compounds using ultrasonic and vacuum-filling methods. The advantages of vacuum-filling impregnation are shown and the main trends in the revision of equipment and technology for the ultrasonic method are determ…
Thin films of Heusler alloys Co 2 MnSn and Co 2 MnGe prepared on sapphire a -plane substrates by RF-sputtering have been investigated by ferromagnetic resonance (FMR) technique. The magnetic anisotropies of the Co 2 MnSn and Co 2 MnGe thin films have been probed and the effective magnetization values have been extract…
Article The Influence of Microcellular Foaming Process on Electrical Conductivity of Conductive Composites was published on March 1, 2009 in the journal Journal of Polymer Engineering (volume 29, issue 1-3).
Low field magnetic and magnetocaloric properties of the compound LaMn 1.9 Fe 0.1 Si 2 have been investigated. Using the M-H data measured at various temperatures, we have derived the magnetic entropy change | ΔS | as a function of temperature and magnetic field, by using the Maxwell relation. The temperature dependenc…
RCrSb 3 crystallizes in a quasi two dimensional structure with RSb and CrSb 2 layers stacked along a axis. This system displays rich magnetic structure due to complex magnetic interaction between 3d moments of Cr and 4f moments of rare earth ion. In this work, we present a comparative study on the heat capacity of R(L…
Abstract Protokeelia is described as a new and rare pennate diatom genus in China. Its valve includes two parts: ventral valve and dorsal valve. The ventral valve is more or less convex or concave. The raphe runs in a distinct elevated and thickened siliceous ridge. In the internal valve, beneath the raphe are fibulae…
The aim of this research was to compare two standardized soil extraction methods [electroultrafiltration (EUF) and ammonium acetate–lactate (AL)] regarding potassium (K) and phosphorus (P) availability in pseudogley soils. In total, 60 pseudogley soil samples from 12 agricultural sites in eastern Croatia (each represe…
The products and kinetics of the thermolysis of 1,2-dioxaspiro[2,5]octane in cyclohexanone and cyclohexanone-CCl 4 mixtures are studied. 1,2-Dioxaspiro[2,5]octane is consumed via two parallel routes: isomerization to oxepan-2-one and solvent (cyclohexanone) oxidation with the partial escape of radicals from the cage (…
Peroxide-containing supramolecular structures prepared by reacting lithium aluminum layered double hydroxides (Li-Al LDHs) with concentrated hydrogen peroxide solutions were characterized by Raman spectroscopy. These compounds were formulated as [LiAl 2 (OH) 6 ](OH) · H 2 O 2 · H 2 O(I) and [LiAl 2 (OH) 6 ](OOH) · H 2…
We have performed thermal studies of a charge disproportionation induced metal-insulator transition in θ-(BEDT-TTF) 2 RbZn(SCN) 4 system. We have detected a sharp peak in a heating process and a broad hump in a cooling process with a remarkable hysteresis. This peculiar transition could be easily suppressed by a rapid…
Ca-Ti-O films were prepared on quartz substrates by MOCVD using the precursors of Ti(O-i-Pr) 2 (dpm) 2 and Ca(dpm) 2 . The effects of deposition conditions on the crystal structure and microstructure of Ca-Ti-O films were investigated. The deposition temperatures (T dep ) were changed from 787 to 1187 K and the total…