Materials Literature
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A new Eu(III) complex, Eu(III)(DBM)(3) BIOQ, has been synthesized with dibenzoylmethane (DBM) as the first ligand and 2-(benzimidazol-2-yl)-8-octyloxyquinoline (BIOQ) as the second ligand. The stability of the complex was analysed by DSC-TG. The results show that the Eu(III) complex has a relatively high thermal stabi…
Traditionally, the nonlinear optical response at the molecular level has been modeled using the two-level approximation, under the assumption that the behavior of the exact sum-over-states (SOS) expressions for the molecular polarizabilities is well represented by the contribution of only two levels. We show how, a ri…
Several nonlinear crystals that are used in laser and optical signal processing technologies belong to the {\overline 4}2m point group. This group exhibits as primary effects natural birefringence, optical activity, linear and quadratic electro-optic effects, and linear and quadratic electro-gyration effects, and, as…
Abstract Thin‐film silicon deposited by plasma‐enhanced chemical vapour deposition (PECVD), encompasses both hydrogenated amorphous silicon (a‐Si:H) and ‘nanocrystalline silicon’ (nc‐Si), the latter being a two‐phase mixture of discrete nanocrystallites in an amorphous matrix. It is distinguished from a‐Si:H by a char…
It was found that slow highly charged ions had a high ability to ionize F atoms on a $\mathrm{F}/\mathrm{Si}(100)\mathrm{\text{\ensuremath{-}}}2\ifmmode\times\else\texttimes\fi{}1$ surface and desorb ${\mathrm{F}}^{+}$ ions along the local bond direction. Actually, the ${\mathrm{F}}^{+}$ ion yields were proportional t…
S2-basierte Nanokatalysatoren werden zur Hydrodesulfurierung in Ölraffinerien eingesetzt. In der Zuschrift auf S. 10 335 ff. präsentieren S. Helveg et al. einzelatomempfindliche Transmissionselektronenmikroskopieaufnahmen industriell hergestellter Nanokatalysatoren. Die beobachteten katalytisch wichtigen Kantenabschlü…
The flame characteristics of castor oil based foam and that of polyether foam impregnated with inorganic flame retardants (FR) were investigated. The polyether foams were impregnated with measured concentration of Antimony trioxide and Sodium bromide, Ammonium dihydrogen orthophosphate, Diammonium hydrogen orthophosph…
We have developed a soft x-ray laser (SXRL) interferometer capable of the single-shot imaging of nano-scaled structure dynamics. The interferometer consisted of the reflection optics including double Lloyd's mirrors and focusing optics, and the interference fringes are produced on the detector surface. The depth and l…
The use of a two-level approximation to simply characterize the nonlinear optical properties of organic materials is well known. Usually only electronic ground states are significantly populated; higher levels are engaged only in the capacity of virtual states, and it is frequently assumed that just one such state dom…
Abstract The microstructure of room‐temperature silver selenide thin films prepared by pulsed laser deposition (PLD) was investigated by transmission electron microscope (TEM). Two phases existed in room‐temperature silver selenide. One was orthorhombic phase (O) and the other was identified as monoclinic phase (M) by…
The influence of annealing on crystal growth and the micro- and mesoscopic structures of Mn-substituted nanocrystalline zinc oxide (ZnO) has been investigated using X-ray diffraction, high-resolution transmission electron microscopy and small-angle neutron scattering (SANS). Average particle sizes and their distributi…
Initial experimental results are reported from the extendedQ-range small-angle neutron scattering (EQ-SANS) diffractometer at the Spallation Neutron Source at Oak Ridge National Laboratory (ORNL). A generation-8 polyamidoamine dendrimer was measured and the conformation parameters (radius of gyration, thickness of the…
We study, in time domain, the exchange of momentum between an electromagnetic pulse and a three-dimensional, discrete, spherical invisibility cloak. We find that a discrete cloak, initially at rest, would experience an electromagnetic force due to the pulse but would acquire zero net momentum and net displacement. On…
A single-crystal charge-flipping algorithm has been applied to two-dimensional projections derived from X-ray powder diffraction data to retrieve structure-factor phases. These phases proved to be as reliable as those obtained from high-resolution transmission electron microscopy (HRTEM) images or from precession elec…
The conjugated carboxy-functionalized terpyridyl bimetal ruthenium complex [(tdctpy)Ru(dctpy-(ph)4-dctpy)Ru(tdctpy)][PF6]4 and [2]rotaxane by self-assembly of [(tdctpy)Ru(dctpy-(ph)4-dctpy)Ru(tdctpy)][PF6]4 with β-cyclodextrin are reported as sensitizer for dye-sensitized solar cells (DSSCs), where tdctpy = 4′-p-tolyl…
The nucleation of voids at the initial stage of hollow nanoshell formation is described in terms of the thermodynamics of nucleation in systems of finite size (or small systems) pumped with vacancies by interdiffusion-driven vacancy influx. Crossovers from suppressed nucleation to metastable nucleus formation and then…
We develop here a general formalism for multiorbital Mott systems that can be used to understand dynamical and static spectral weight transfer. We find that the spectral weight transferred from the high-energy scales is greatly increased as a result of the multiorbital structure. As a consequence certainly dynamically…
Effects of alkali treatment of rice straw flour on the mechanical properties of rice straw flour-polypropylene composites were investigated. Rice straw flour (40 mesh) was first treated with sodium hydroxide using two concentrations of sodium hydroxide, 5 and 10% (W/W), and two treatment times (45 and 90 min) for a to…
Isocitrate dehydrogenase catalyzes the first oxidative and decarboxylation steps in the citric acid cycle. It also lies at a crucial bifurcation point between CO2-generating steps in the cycle and carbon-conserving steps in the glyoxylate bypass. Hence, the enzyme is a focus of regulation. The bacterial enzyme is typi…
EDIFFis a new user-friendly software suite for unit-cell determination of three-dimensional nanocrystals from randomly oriented electron diffraction patterns with unknown independent orientations. It can also be used for three-dimensional cell reconstruction from diffraction tilt series. In neither case is exact knowl…