Materials Literature
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Any labeling with multicolor markers can be affected by the autofluorescence of biological tissue due to the UV or blue light excitation sources, or the results are affected by fluorescence resonance energy transfer. In this work, we present novel IR-to-vis upconverting nanoparticles of different rare earth metal dopa…
This review focuses on the self-organization of organic–inorganic hybrid materials with molecular-scale and mesoscale periodicities. It describes organosilicas with molecular periodicity of organic units formed by self-organization of bissilylated organic monomers without employing templates, as well as porous organos…
This review aims to demonstrate the capability of the ice-segregation-induced self-assembly (ISISA) process for the preparation of materials with highly sophisticated structures (e.g., hierarchical materials exhibiting organization at different scale levels). Cryogenic processes (consisting of the freezing, storage in…
The conventional x-ray angiography (XRA) provides a gold standard for diagnosis of vascular diseases (1). However, this technique requires administration of a large volume of iodinated contrast media through arterial puncture and exposes patients to a significant dose of ionizing radiation. Magnetic resonance imaging…
The structural stability of hydrogen bonded boron microclusters has been studied by using the density functional theory. Effects of the increasing number of hydrogen atoms on the cage geometries of B 5 –B 10 clusters, and the distortion of the cage configurations of the boranes are assessed. The possible stable struct…
In the present study, we have synthesized Mn 0.4 Zn 0.6 In 0.5 Fe 1.5 O 4 ferrites by the normal ceramic method and the citrate precursor method. The structural studies have been made by using an x-ray diffraction (XRD) technique and scanning electron microscopy (SEM), which confirmed the formation of a single-phase s…
A new surfactant-templated carbon material, carbon nanofoam (CNF), has been synthesized with a semicrystalline and conductive framework, high surface area and interconnected porous structure, and prepared in a wide variety of bulk shapes and forms. CNF was also successfully applied as a support for palladium in the He…
An efficient iterative synthesis was utilized to prepare hard-segment extenders of uniform chain lengths with multiple hydrogen-bonding sites for uses in preparation of supramolecular thermoreversible polyurethanes (TRPUs). The unique feature of our iterative synthesis is based on two alternative addition reactions to…
Viele Gebrauchseigenschaften von Kunststoffen hängen entscheidend von der Morphologie ab, so daß deren Aufklärung durch die Elektronenmikroskopie eine große Rolle spielt. Zunächst wird generell auf die Schwierigkeiten eingegangen, von Kunststoffdünnschnitten kontrastreiche Abbildungen herzustellen. Es wird dann eine M…
The phonon dynamics of type-I clathrates Sr 8 Ga 16 Ge 30 have been studied at room temperature by inelastic neutron scattering. Optical phonons associated with large vibrations of Sr atoms in large tetrakaidecahedral cages, (Ga,Ge) 24 , are observed at a relatively low energy of E ∼4 meV. Analysis based on a Born–von…
Abstract A potentially useful semiorganic nonlinear optical (NLO) material, L‐arginine perchlorate, has been synthesized and bulk crystals have been grown by slow cooling technique. The grown crystals were characterized by single crystal X‐ray diffraction, UV‐Vis‐NIR spectroscopy, FT‐IR, thermal analysis and SHG measu…
The effect of the partial pressure of acetylene on the height of carbon nanotube films synthesized by the water-assisted CVD (WA-CVD) was studied. Initially, Fe (2 nm)/Al 2 O 3 (15 nm) bilayers were deposited onto a silicon substrate and subjected to the WA-CVD to grow carbon nanotubes. The growth was carried out at 8…
Since the early days of studies on thermoelectric clathrates it has been evidenced that the lowering of thermal conductivity in these compounds is related to the guest ion's rattling characteristics. Here we report on the relation between the guest vibration and lattice thermal conductivity κ L in single crystalline s…
Abstract Large single crystals of the polar (point group mm 2) compound tris(glycine) zinc chloride, (NH 3 CH 2 COO) 3 · ZnCl 2 , were grown from aqueous solutions. The refractive indices were measured in the wavelength region from 365 nm to 1083 nm and an unpolarised absorption spectrum was recorded (transparency ran…
The DmsD protein is necessary for the biogenesis of dimethyl sulphoxide (DMSO) reductase in many prokaryotes. It performs a critical chaperone function initiated through its binding to the twin-arginine signal peptide of DmsA, the catalytic subunit of DMSO reductase. Upon binding to DmsD, DmsA is translocated to the p…
The crystallographic and magnetic properties of $\mathrm{Ca}{\mathrm{Ru}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}{\mathrm{O}}_{3}$ $(0\ensuremath{\le}x\ensuremath{\le}1.0)$ were investigated in detail by x-ray powder diffraction, magnetization, and magnetic Compton scattering measurements. The lattice parameters show cons…
The thermophysical properties of cationic conjugated polymers and oligomers are characterized, and the extent of hygroscopicity is explored. The rate of moisture absorption, water affinity, and water content are important properties to consider for incorporation into optoelectronic devices. Guidelines for controlling…
We study the rolling and sliding motion of droplets on a corrugated substrate by Molecular Dynamics simulations. Droplets are driven by an external body force (gravity) and we investigate the velocity profile and dissipation mechanisms in the steady state. The cylindrical geometry allows us to consider a large range o…
TlGaSe 2 and TlGaSe 2 :Gd single crystals were grown by the Stockbarger method. There are no cracks or voids on the surface of ingots. The samples were cleaved along the cleavage planes (001). The freshly cleaved crystals had mirror-like surfaces even before using mechanical treatment. The phonon energies in TlGaSe 2…
Phase relations at 900 °C, crystal chemistry, electrical and thermal transport measurements, and heat capacity data are reported for the clathrate systems: Ba 8 {Pd,Pt} x Si 46- x . For both systems a ternary clathrate phase was identified with a small homogeneity region extending at 900 °C for 2.5≤ x Pd ≤4.1 and 2.8≤…