Materials Literature
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The objective of this work is to study the magnetic properties of arrays of Ni-Fe nanowires electrodeposited in different template materials such as porous silicon, polycarbonate and alumina. Magnetic properties were studied as a function of template material, applied magnetic field (parallel and perpendicular) during…
Bu çalışmanın amacı, çözücü buharlaştırma yöntemi ile poli (DL-laktid-ko-glikolid) (PLGA) nanopartiküllerinin hazırlanması ve bu nanopartiküllerin özellikleri üzerine çeşitli stabilizasyon ajanlarının etkilerinin aydınlatılmasıdır. Stabilizasyon ajanlarının kullanılması, nanopartikül üretim işlemi sırasında stabil emü…
In the past five decades, many new types of polymers, containing nitrogen and phosphorus atoms as a significant part of the polymer backbone, have been synthesized. This paper reviews the developments in the field of polyphosphazenes and their applications. In this paper, synthesis, characterization, functionalization…
Abstract: Realization of current trends and innovative uses of insect fibre, silk is required to exploit its compatibility, eco friendly and value addition potential. The nutritive value as human diet for cardiac and diabetic patients, component for cosmetic preparations indicate silk application rate. The bio-compati…
Triblock copolymers consisting of a middle silk-like [(Gly – Ala)3 – Gly – Glu]n block flanked by two hydrophilic end blocks that assume a random conformation in aqueous solution at all pH spontaneously assemble into micrometre long fibers at low pH. As elucidating the molecular structure of the stacked middle blocks,…
The reactivity of Mn2O3 and late rare-earth sesquioxides in alkaline aqueous solution affords a high-yield formation of rare-earth manganites, LnMnO3 (Ln = Ho–Lu and Y). The yield of the products depends significantly on the pH, which determines the solubility of the manganese cation, and reaction temperature, which r…
Irradiation of CdSe-ZnS quantum dots (QDs) with visible light in the presence of [PtCl(4)(bpy)] (1) (bpy = 2,2'-bipyridine) produced with high efficiency [PtCl(2)(bpy)] (2) by photoinduced electron transfer; a reaction and strategy which opens up new opportunities for cancer therapy.
Abstract Single‐walled carbon nanotubes (SWNTs) have unique properties and are projected to have a major impact in nanoscale electronics, materials science, and nanomedicine. Yet, these potential applications are hindered by the need for sample purification to separate SWNTs from each other and from metallic catalyst…
The sorption and diffusion of toluene through blends of natural rubber (NR) and linear low density polyethylene (LLDPE) of varying compositions were studied at 35, 55, and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mn>65</mml:mn></mml:mrow><mml:mi>°</mml:mi></mml:msup><m…
This study examined the effect of adding SrO on the grain-boundary conduction of (gadolinia-doped ceria) containing . The apparent grain-boundary resistivity at decreased drastically from upon doping with SrO, while the grain-interior resistivity increased gradually from as the SrO concentration was increased up to .…
This paper presents experimental distributions of recombination rates for excitons in individual CdSe-ZnS core-shell quantum dots separated from a smooth gold film by a nanometre-scale dielectric layer. By measuring emission kinetics as a function of time, we obtain intrinsic recombination rates for single quantum dot…
The functionalisation of carbon nanomaterials with the standard nitric acid treatment is greatly influenced by their graphitic character. The structural order directs the density as well as the nature of the created functional groups and, as a consequence, influences the efficiency of their filling with metal nanopart…
Complexes of the type (L–L)MoO(O2)2 heterogenized on phenylene-bridged mesoporous organosilicas show a 10-fold increase in catalytic activity and a high stability in liquid phase epoxidation reactions, with H2O2 as the oxidant, compared to the corresponding MCM-41-derived systems.
In this communication, we describe a general, straightforward route to produce highly porous bulk materials from melt-processable and intractable polymers using particle-stabilized liquid foams.
Determination of Contact Resistivity by the Cox and Strack Method for Metal Contacts to Bulk Bismuth Antimony Telluride, Gupta, R. P., White, J. B., Iyore, O. D., Chakrabarti, U., Alshareef, H. N., Gnade, B. E.
The photoluminescence properties of Bi3+/Eu3+ doped YBO3 phosphors under 147, 168, 185, 222, and 262 nm excitation were studied in this paper. The sensitization luminescence of Eu3+ by Bi3+ was demonstrated and a useful concentration scope, which is 0.05–0.25 mol %, for Bi3+ doped into YBO3:Eu3+ as candidate of plasma…
A diamond pn-junction diode electron emitter was examined in an emission spectro-microscope. An electron emission efficiency of ∼10-2 to the diode current was confirmed at a forward diode current larger than ∼40 μA. Measured electron emission images showed that electron emission indeed occurs at the terrace and up to…
A sol-gel assembly process was developed for the synthesis of magnetic core/carbon shell materials with porous networks. Fe(CO)5 was assembled into the pore channels of mesoporous silicavia a sol-gel method at 18 °C, by using the block copolymer F127 as the template and Fe(CO)5 as an additional precursor. At this temp…
Cu(II)/MCM-41, Cu(I)/MCM-41 and Cu(0)/MCM-41 materials were prepared with Cu[OCHMeCH2NMe2]2/MCM-41 as precursor under controlled conditions. The states of copper on the resulting samples were characterized by temperature programmed reduction (TPR), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), X-ray photoelect…
Vertically aligned nanotube (VATN) array micropatterns were fabricated based on a versatile superhydrophilic–superhydrophobic template. Scanning electron microscopy, optical microscopy, and an electron probe microanalyzer were systematically used to confirm the successful fabrication of the dual-scale (micro-/nanoscal…