Materials Literature
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Long range 1:1 cation order was developed in Pb(Fe2(1−x)∕3Sc2x∕3W1∕3)O3 solid solution compounds by high temperature solid state reaction. It is found that the degree of cation order directly influences the saturation magnetization in these single phase compounds. A high saturation magnetization (∼0.61μB∕f.u.) was obs…
An ion implanted Mn–Ge(100) alloy has been fabricated with a 30nm subsurface layer of disorderly diluted Mn atoms, which settle all in substitutional lattice sites after 400°C annealing in vacuum. The Mn L2,3 x-ray absorption spectroscopy of the disordered Mn implanted alloy is featureless, while the one taken on the…
We present heat capacity measurements on crystalline Zn nanowires with diameters of 230 and 23 nm, bracketing the superconducting coherence length of 155 nm. Transport measurements on superconducting nanowires have found a crossover from three-dimensional to one-dimensional behavior as the wire diameter was reduced be…
Si nanocrystals with face-centered-cubic (fcc) structure were fabricated using common sputtering technique, but applying bias on the substrate, the thermodynamic calculation indicates that the bombardment of Ar+ ions arising from the bias should be responsible for the crystallization and phase transition of Si nanocry…
It is well accepted that the adventitia is much more than a simple elastic membrane which surrounds the media. However, the extent of its contribution to vascular physiology, as well as the mechanisms involved, remains to be clearly established and characterised. Investigation into these topics is hampered by a few te…
The authors have fabricated a thin film copper phthalocyanine to crystalline ferroelectric copolymer poly(vinylidene fluoride with trifluoroethylene) heterojunction diode. The formation of a diode is expected from the band offsets between the two thin film molecular systems, as ascertained from combined photoemission…
In situ multiple tensile load-unload cycles under synchrotron radiation are performed on nanocomposite Cu∕Nb wires. The phase specific lattice strains and peak widths demonstrate the dynamics of the load-sharing mechanism where the fine Cu channels and the Nb nanotubes store elastic energy, leading to a continuous bui…
We report results from molecular dynamics studies concerning the microscopic structure and dynamics of the ternary, bulk metallic glass-forming Cu60Ti20Zr20 alloy. In detail we consider the partial radial distribution functions, nearest-neighbor numbers, specific heat, simulated glass temperature, diffusion coefficien…
Abstract The aim of the present study is to analyze the compatibility between recycled Poly(vinyl chloride) (PVC) and styrene‐acrylonitrile copolymer (SAN). With this objective recycled PVC coming from credit cards have been blended with both virgin and recycled SAN with the aim of increase the benefits of recycled PV…
Abstract This work was aimed at understanding how the injection‐molding temperature affected the final mechanical properties of in situ composite materials based on polycarbonate (PC) reinforced with a liquid‐crystalline polymer (LCP). To that end, the LCP was a copolyester, called Vectra A950 (VA), made of 73 mol % 4…
Fluorinated copolymers based on 4-(N-methacryloylamino)phenyl methacrylate are proposed as materials for the liquid crystal (LC) photoalignment with a wide range of variations of a pretilt angle. As fluorinated chains, 2,2,3,3-tetrafluoropropylmethacrylate and 2,2,3,3,4,4,5,5-octafluoropenthylmethacrylate are used. Th…
To elucidate the origin of the colossal dielectric response (CDR) of CaCu3Ti4O12 (CCTO), multilayer thin films of CCTO interposed in insulating CaTiO3 (CTO) were synthesized using a pulsed laser deposition technique. The capacitance C of CTO/CCTO/CTO films with different layer thicknesses is measured. After removing t…
Hybridvesikel: Magnetische Nanopartikel (γ-Fe2O3) und Quantenpunkte (CdSe/ZnS) können durch Emulsionsprozesse in stabile Vesikel eingeschlossen werden. Die Hybridvesikel (HVs) haben bemerkenswerte magnetische und Fluoreszenzeigenschaften (siehe die Bilder; Maßstab: 10 μm). Die Detektion der Fluoreszenz ermöglicht die…
We explore the lattice dynamics of the negative thermal expansion material, cubic $\mathrm{Hf}{\mathrm{Mo}}_{2}{\mathrm{O}}_{8}$, through analysis of its heat capacity (measured from $0.5\phantom{\rule{0.3em}{0ex}}\text{to}\phantom{\rule{0.3em}{0ex}}300\phantom{\rule{0.3em}{0ex}}\mathrm{K}$) and its room-temperature R…
Abstract The goal of this research was to determine the fiber and web properties of melt‐blown (MB) thermoplastic polyurethane (TPU) polymer as dependent on the MB processing conditions. The relationships between the MB fiber properties and the MB process conditions, such as the die‐to‐collector distance and the veloc…
Recently developed relaxor lead magnesium niobate–ferroelectric lead zirconate titanate single crystals exhibit large length extensional k33 coupling, improved thermal stability, and a higher coercive field compared to morphotropic lead magnesium niobate–lead titanate single crystals. Experimental results and implicat…
1 ∕ f noise in current biased La0.82Ca0.18MnO3 crystals has been investigated. The temperature dependence of the noise follows the resistivity changes with temperature, suggesting that resistivity fluctuations constitute a fixed fraction of the total resistivity, independently of the dissipation mechanism and magnetic…
The authors demonstrate precise alignment and controlled assembly of single wall nanotube (SWNT) bundles at a fast rate over large areas by combining electrophoresis and dip coating processes. SWNTs in solution are assembled on prepatterned features that are 80nm wide and separated by 200nm. The results show that the…
,,Very minute in their dimensions“ – als winzig also – bezeichnete Faraday die Partikel in einer feinen Dispersion von kolloidalem Gold, die er vor 150 Jahren in einem roten Lichtstrahl betrachtete (im Bild mit Laserlicht nachgestellt). Diese Beobachtung legte den Grundstein für die moderne wissenschaftliche und techn…
The results of the experimental studies of resistivity of a nanocarbon material (NCM), which contains carbon nanotubes (CNT), and also the amorphous carbon particles and nanographite are presented. The main efforts were aimed at the ascertaining the mechanism of NCM conduction with regard to their phase composition.