Materials Literature
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The luminescence properties of InGaN/GaN multiple-quantum-well light-emitting diodes (LEDs) with different quantum-well (QW) thicknesses were investigated. It is found that with decreasing the QW thicknesses, the integrated intensities of the photoluminescence (PL) and electroluminescence (EL) peaks demonstrate a cont…
We show that hydrogen titanate (H(2)Ti(3)O(7)) nanotubes form strongly associated reversible nano-bio-conjugates with the vital respiratory protein, cytochrome c. Resonance Raman spectroscopy along with direct electrochemical studies indicate that in this nano-bio-conjugate, cytochrome c exists in an equilibrium of tw…
Corrosion is a frequent cause of degradation of reinforced concrete structures. In order to design a reinforced concrete structure subjected to reinforcement corrosion, a model which describes the initiation and subsequent propagation of corrosion is required. The International Federation of Concrete (FIB) probabilist…
Ethanolic and aqueous extracts of the leaves and flowers of Alstonia scholaris were evaluated for their antioxidant activity by investigating their effect on blood glutathione levels in alloxan-induced diabetic rats. The ethanolic extract of the leaves was the most active; therefore, its cytotoxicity against HepG2 cel…
Nanostructured topological insulator materials such as ultrathin films, nanoplates, nanowires, and nanoribbons are attracting much attention for fundamental research as well as potential applications in low-energy dissipation electronics, spintronics, thermoelectrics, magnetoelectrics, and quantum computing due to the…
BACKGROUND: Osteomyelitis caused by Methicillin-resistant Staphylococcus aureus (MRSA) often requires surgery and prolonged systemic antibiotic treatment. Local antibiotic delivery systems of bioceramics or polymers have been developed to treat osteomyelitis. A disadvantage of biodegradable polymers is the initial bur…
Abstract Chitosan microspheres loaded Cu(II) were prepared using a precipitation method and heterogeneously crosslinked with glutaraldehyde. The abilities of the binary [Cu(II)/Glut‐chitosan] system for binding two acid dyes, that is, Acid blue 25 (AB25) and Calmagite (Calma) were investigated. Sorption experiments we…
Iodinated contrast agents, such as iopamidol, are worldwide employed for performing a number of X-ray diagnostic procedures. Every year, thousands of tons of iodinated contrast agents are manufactured for the market with chemical processes that usually employ thionyl chloride. In this paper, we describe two new green…
Substrate-type planar 2-D photonic crystal (PhC) waveguides suffer from large experimental propagation losses compared to membrane-type PhC waveguides. Numerical simulations can give insight into the quantitative contribution to the propagation losses originating from fabrication imperfections and nonideal designs of…
Observation of photoluminescence from spin triplet states of excitons bound to interstitial carbon-oxygen complexes (C${}_{\mathrm{i}}$-O${}_{\mathrm{i}}$) in silicon is reported. New luminescence peak labeled as C${}_{\mathrm{T}}$ line emerges at the energy $2.64\phantom{\rule{4pt}{0ex}}\mathrm{meV}$ below the well-k…
A unified model of grain-boundary segregation kinetics is established, which can simulate the equilibrium and non-equilibrium grain-boundary segregation kinetics during isothermal ageing. The results of model fittings/predictions are in a good consistence with those of the experiments. Values of several important para…
X-ray magnetic circular dichroism at the Er ${M}_{4,5}$ edge is used to study the switching behavior of the hard ErFe${}_{2}$ layers in an epitaxial [ErFe${}_{2}$(70 \AA{})/YFe${}_{2}$(150 \AA{})] \ifmmode\times\else\texttimes\fi{} 25 exchange-spring superlattice. Magnetic hysteresis loops for the Er magnetization, at…
Using a finite-element, full-wave modeling approach, we present a flexible method of analyzing and simulating dielectric and plasmonic waveguide structures as well as their mode coupling. This method is applied to an integrated plasmonic circuit where a straight dielectric waveguide couples through a straight hybrid l…
Based on interfacial manipulation of a MgO (100) substrate and non-magnetic AlN compound, L10-FePt/AlN perpendicular nanocomposite films were designed and prepared. Systematic studies on magnetic properties and microstructure of the films show that the MgO substrate controls crystal orientation of the FePt lattice and…
A new critical current density ( J c ) model for high-quality YBCO (YBa 2 Cu 3 O 7 ) thin films has been proposed, combining thermally activated flux creep with a vortex pinning potential for columnar defects. The pinning for thermally activated vortices has been described as strong pinning on chains of individual edg…
In this paper, a 10 kW current-fed DC-DC converter using resonant push-pull topology is demonstrated and analyzed. The grounds for component dimensioning are given and the advantages and disadvantages of the resonant push-pull topology are discussed. The converter characteristics and efficiencies are demonstrated by c…
A simple method of characterization of suspensions of spherical nanoparticles with monotonically variable size is proposed. It allows for the in situ measurement of the particle size as well as spectral dependence of their refractive indices. The method requires three optical channels: one for the illumination of a su…
Zn incorporation into CuInS2 absorbers is found to increase the open-circuit voltage but decrease the short-circuit current of the corresponding thin-film solar cells. In this article, we study the effect of Zn incorporation into CuInS2 absorbers with a focus on the mechanisms leading to the measured changes in the el…
This paper reports results obtained on exchange-biased IrMn/Al2O3/Co films deposited by magnetron sputtering, where the thickness of the non-magnetic insulator layer, tAl2O3, was varied. Ferromagnetic resonance and static magnetization measurements were used to study the exchange interaction between the antiferromagne…
Wu K, Mo X, Lu S, Han Z. Retrograde delivery of stem cells: promising delivery strategy for myocardial regenerative therapy. Clin Transplant 2011: 25: 830–833. © 2011 John Wiley & Sons A/S. Abstract: Heart failure is a leading cause of morbidity and mortality worldwide. The current strategies for treatment are limited…