Materials Literature
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We report evolution of the two-dimensional electron gas behavior at the NdAlO3/SrTiO3 heterointerfaces with varying thicknesses of the NdAlO3 overlayer. The samples with a thicker NdAlO3 show strong localizations at low temperatures and the degree of localization is found to increase with the NdAlO3 thickness. The T−1…
A magnetoelectric laminate composite based on length-magnetized Terfenol-D alloy and width-polarized ternary 0.35Pb(In1/2Nb1/2)O3-0.35Pb(Mg1/3Nb2/3)O3-0.30PbTiO3 single crystal has been developed and exhibits a giant magnetoelectric voltage coefficient of 1.7 V/Oe at low frequencies and 20 V/Oe at resonance frequency…
To elucidate the intrinsic characteristics and limits of nanostructured solar cells, it is necessary to initiate studies of exploiting single nanostructures as photovoltaic elements. It is interesting to develop simple and effective methods to construct single nanostructured solar cells. In this paper, we synthesized…
Anionic hydrated titanate (H(n)TiO(m): HTO) nanosheets and cationic magnesium-aluminum layered double hydroxide (Mg-Al LDH) nanosheets were electrophoretically deposited on positively and negatively charged indium tin oxide (ITO)-coated glass substrates, respectively. The HTO nanosheets and Mg-Al LDH nanosheets obtain…
We have measured the spin-wave spectrum of the half-doped bilayer manganite Pr(Ca,Sr)(2)Mn(2)O(7) in its spin, charge, and orbital ordered phase. The measurements, which extend throughout the Brillouin zone and cover the entire one-magnon spectrum, are compared critically with spin-wave calculations for different mode…
Thermal resistance of fabrics is an important property influencing an ability of fabrics to protect the human body against cold. In this paper the model of the thermal resistance of woven fabrics is elaborated. Next, an experimental verification was carried out on the basis of the results for 26 cotton woven fabrics o…
Anionic dicyanocuprate(I) ions in nano and bulky crystals have been investigated. The doped nanosystems show unusual photophysical properties such as multiple emission bands, thermochromism, and optical memory. In contrast, NaCu(CN) 2 and KCu(CN) 2 have different polymeric structures and exhibit only a single emission…
Abstract Stannyl‐substituted [(RZn) 4 (OR′) 4 ] cubanes with different tin‐containing alkoxy groups [Ph 3 SnOZnMe] ( 1 ), [Ph 3 SnOZnEt] ( 2 ), [Me 3 SnOZn t Bu] ( 3 ), and [Ph 3 SnOZn t Bu] ( 4 ) are easily accessible by Brønsted acid–base reaction of the corresponding triorganotin hydroxides with ZnMe 2 , ZnEt 2 , a…
The formation of Cu dimers on the ZnO(10$\overline{1}$0) surface has been studied using hybrid density functional theory. Depending on the adsorption site, Cu atoms are found to adsorb with either oxidation state 0 or $+$1. In the latter case, the Cu atom has donated an electron to the ZnO conduction band. The two mod…
Polyarylamine containing meta-para-para-aniline units in the main chain and meta-para-aniline units in the pendant chains was synthesized. The polymer can be oxidized to radical cations in chemical or electrochemical ways. The presence of meta-phenylenes in the polymer chemical structure allows for the ferromagnetic c…
In einem anderen Licht: In einem provokativen Schlaglicht auf die Nanowissenschaften beschäftigt sich Roald Hoffmann mit der Verwirrung um strukturelle und elektronische Dimensionalität, den Konsequenzen des Durchtrennens von Bindungen in der Bildung von Nanoobjekten, den Auswirkungen einfacher Säure-Base-Chemie auf d…
We presented here a targeted drug delivery system, biotinylated polyethylene glycol prodrug loading with free drugs (doxorubicin or camptothecin), which showed high drug loading capacity and superior targeted therapeutic efficacy for cancerous cells.
This paper reports a convenient and sensitive method for the detection of TNT by using FITC–PAH as a probe, which selectively recognizes the TNT molecule with the amino group, and anchors the amino–TNT complex adjacent to the fluorophore moiety via the bent alkyl chain, leading to the fluorescence quenching of the pro…
We suggest an approach for creating metamaterials with sign-varying nonlinear response. We demonstrate that microwave metamaterials with such competing nonlinearities can be created by loading split-ring resonators (“meta-atoms” of the structure) with pairs of varactor diodes and photodiodes exhibiting nonmonotonic re…
The crystallization behavior of Ge2Sb2Te5 nanometric clusters was studied using X-ray diffraction with in situ annealing. Clusters were made using a sputtering gas-phase condensation source, which allowed for the growth of well-defined, contaminant-free, and isolated clusters. The average size for the clusters is 5.7…
Ultrathin films containing a high fraction of cellulose nanowhiskers embedded in an acrylic-based polymer matrix were successfully prepared by a shear-convective assembly method. Their morphological, chemical and physical properties were examined by AFM Peak Force Tapping, Ellipsometry, contact angle and X-ray photoel…
We report on the first example of self-assembled nanotubes of a camptothecin derivative in a molecular hydrogel.
Abstract Polycarbonate (PC)/nanosilica (nSiO 2 ) nanocomposites were prepared by melt‐blending technique, in which surfactants are used to enhance the interfacial adhesion between nSiO 2 and polymer matrix. Mechanical properties demonstrate increased Young's modulus and yield strength of modified PC/nSiO 2 nanocomposi…
Porous silicon (PSi) layers are used as templates to grow epitaxial planar and fully relaxed Ge pseudo-substrates. An annealing at 600 °C, dramatically changes the PSi morphology and produces compliant template layers which serve in a second step, as substrate for the epitaxy of fully relaxed SiGe layers with a Ge con…
Nanometre sized particles of terbium and erbium co-doped yttrium oxysulfide up-converting phosphors were prepared by a urea homogeneous-precipitation method. Results from X-ray powder diffraction (XRPD), scanning electron microscopy (SEM) and photoluminescence spectroscopy studies on the microstructure and luminescent…