Materials Literature
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We performed comprehensive structural studies on local ionic displacements and medium-range ordering across a series of phase transitions in (1−x)Pb(Zn1∕3Nb2∕3)O3–xPbTiO3 (PZN-xPT) at 15K by using neutron pair-distribution-function (PDF) and Rietveld analyses. PDF spectra clearly demonstrate that all phases of PZN-xPT…
Collagen gels provide a biocompatible matrix for replacing soft tissues, but it is essential to determine whether the mechanical properties of the matrix can be retained after cell ingrowth into the collagen scaffold. We have determined the mechanical strength of four collagen gel compositions (plain collagen; collage…
Ferromagnetic film of densely packing chromium oxide nanoparticles has been fabricated by vacuum deposition of chromium oxide clusters at room temperature. The clusters were generated with a magnetron plasma gas aggregation source by introducing a mixture of argon and oxygen as buffer gas. A magnetic hysteresis loop s…
The structure and formation of nanoparticles without encapsulation of the intermetallic compound DyCo2 were investigated by using x-ray diffraction and high-resolution transmission electron microscopy. The DyCo2 nanoparticles are stable in air without any shell protection. A large magnetic-entropy change of 13.2Jkg−1K…
The polarization switching kinetics of ferroelectric Langmuir–Blodgett films of vinylidene fluoride-trifluoroethylene copolymer were investigated by piezoresponse force microscopy with a resolution of 100nm. The switching time in response to a localized voltage pulse exhibits an exponential dependence on reciprocal vo…
The conversion of 6-azido-6-deoxy cellulose (degree of substitution, DS 0.75) homogeneously in the ionic liquid 1-ethyl-3-methylimidazolium acetate with polyamidoamine (PAMAM) dendrons possessing an ethynyl focal moiety via the copper catalyzed Huisgen reaction (“click” reaction) yielded a novel biopolymer derivative.…
High-density capacitively coupled plasma with electron density of 1011cm−3 was produced with the effects of the multihollow cathode discharge and the high-secondary-electron emission from radio frequency (rf)-biased electrode using Ar gas. It was found that the optimum pressure was around 3–15Pa. In the case of only m…
Evaluation of nutrient status in soil is important for nutritional, environmental, and economical aspects. This research was carried out to determine the potassium (K) available to corn (Zea mays) in 15 soils from the Hamedan province in the west of Iran. The treatments included two K levels [0 and 200 mg K kg−1 as po…
We present the results of our investigation into the effects of pressure and light on the high spin⇆low spin transition behavior of the dinuclear iron(II) compound [FeII2(PMAT)2](BF4)4⋅DMF. It is found that increased pressure favors the stabilization of the system through a transition from the (HS-HS) state to the (HS…
Magnetoelastic domains in ferromagnetic shape memory alloys evolve through either variant rearrangement or magnetization rotation, resulting in a large or a small magnetic field-induced strain depending on the magnitude of applied compressive stress. These phenomena are simulated in this letter using an unconventional…
Polymer-free photovoltaic devices were fabricated via a solution process using PbSe colloidal quantum dots and an organic semiconductor, tetrabenzoporphyrin, that can be derived from a soluble precursor. Flat heterojunction (FHJ) and bulk heterojunction (BHJ) devices were fabricated and the current-voltage characteris…
Abstract A novel amperometric glucose biosensor based on self‐assembling glucose oxidase (GOx) and dendrimer‐encapsulated Pt nanoparticles (Pt‐DENs) on nanofibrous polyaniline (PANI) was described. PANI nanofibers were synthesized via an interfacial polymerization method. A sulfonated polyelectrolytes‐poly(sodium 4‐st…
New palladium(II) complexes of the free-base tetrakis[2,3-(5,6-di-2-pyridylpyrazino)porphyrazine], [Py 8TPyzPzH 2], have been prepared and their physicochemical properties examined. The investigated compounds are the pentanuclear species [(PdCl 2) 4Py 8TPyzPzPd], the monopalladated complex [Py 8TPyzPzPd], and its corr…
Complex control of solubility: Single-walled nanotubes (SWNTs) can be dissolved in organic solvents by formation of a complex with a 2,2′-bipyridine derivative and Cu through mechanochemical high-speed vibration milling. The conformational change of the CuI/CuII complexes resulting from chemical oxidation–reduction re…
Current-induced breakdown is investigated for carbon nanofibers (CNF) for potential interconnect applications. The measured maximum current density in the suspended CNF is inversely proportional to the nanofiber length and is independent of diameter. This relationship can be described with a heat transport model that…
We investigate the effect of Ru doping on the dielectric and ferroelectric behaviors of polycrystalline Sr0.9Ba0.1TiO3. It is observed that the Ru doping significantly suppresses the ferroelectric mode, as evidenced by the Raman spectroscopy at various temperatures. The enhanced quantum fluctuation associated with the…
Ordered arrays of monodisperse cobalt ferrite (CoFe2O4) nanocrystals with highly controllable spherical or cubic shapes have been synthesized via solution-based thermolysis of an intimately mixed Co2+Fe23+-oleate precursor. The evolution from spherical to cubic morphology is achieved by simply changing the precursor c…
Abstract Generating hydrodynamic/ acoustic cavitation (Gogate et al.) for a useful purpose encompasses the following energy transformation steps: (1) Burning fuel in boiler. (2) Expanding the steam in a turbine generator. (3) Using electrical output from the generator to: (a) Pump water through a mechanical constricti…
By using a classical density functional theory (interfacial statistical associating fluid theory), we investigate the structure and effective forces in nonadsorbing polymer-colloid mixtures. The theory is tested under a wide range of conditions and performs very well in comparison to simulation data. A comprehensive s…
In this paper, we demonstrate how a silver dendrite transforms from mesocrystal into single crystal and the stability for a dendritic silver mesocrystal within a Sn∕AgNO3 galvanic replacement reaction. Our findings provide the direct evidence and visible picture of the transformation from mesocrystal to single crystal…