Materials Literature
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Waveguide-based spectroscopic techniques utilizing evanescent wave as a probe are ideal tools for surface and interface analysis. However, practical applications of these techniques are largely limited by the weak effective signals resulting from the restricted strength of interaction between the evanescent wave and t…
Using CS-corrected transmission electron microscopy, we demonstrate the atomic details of a topological vortex-like domain pattern in multiferroic hexagonal manganite YMnO3. The domain configuration shown here is confirmed to be different from a real vortex. The vortex-related issue is discussed and understanding of t…
This study evaluated the acaricidal activities of acetophenone and its derivatives for their potentials as natural acaricides using an impregnated fumigant bioassay against Dermatophagoides spp. and Tyrophagus putrescentiae . On the basis of the LD50 values against D. farinae, 3'-methoxyacetophenone (0.41 μg/cm(2)) wa…
An optical valve is realized by associating a nematic liquid crystal layer with a Cr-doped gallium arsenide as a photoconductive substrate. The light-valve is shown to efficiently operate in transmission at 1.06 μm optical wavelength. The optical phase shift and refractive index change are measured as a function of th…
Because of the fundamental properties and possible applications in spin-based electronics and photonics, diluted magnetic semiconductor nanowires are actively pursued. Here we report a general and facile solution synthetic strategy to prepare colloidal diluted magnetic semiconductor nanowires through solution-liquid–s…
We report the discovery of superconductivity in Nb${}_{3}$Pd${}_{x}$Se${}_{7}$ with an $x$-dependent superconducting transition temperature as high as ${T}_{c}\ensuremath{\simeq}2.1$ K for $x\ensuremath{\simeq}0.7$ (middle point of the resistive transition). Needlelike single crystals display anisotropic upper-critica…
We have theoretically studied the dielectric environment effect on the charged-impurity-limited carrier mobility of graphene double-layer structure (GDLS) on the basis of the Boltzmann transport theory. In this system, two graphene layers are separated by a dielectric barrier layer. It is pointed out that the carrier…
Two pH-activatable star-shaped prodrugs are synthesized through the condensation reaction between Y- or dumbbell-shaped poly(ethylene glycol)-poly(lactic acid-co-glycolic acid) (PEG-PLGA) copolymer and acid-sensitive cis-aconityl-doxorubicin. The prodrugs self-assemble into micelles with favorable hydrodynamic radii a…
In this paper, we report a new and easily up-scalable dry chemical method to functionalize with diene and dienophile groups a large range of surfaces, such as metal, polymer, or glass, and we demonstrate the potentiality of this technique to realize thermally responsive adhesion between these materials. A complete and…
In the present study the bonding of ammonia–borane (AB) to selected transition-metal-based catalysts was studied on the basis of the charge and energy decomposition scheme ETS-NOCV. The following complexes of AB with mono- and bifunctional catalysts were considered: [Cp 2 Ti] 2+ ( I ), [Pd(allyl)(2,4-hexadiene)] + ( I…
In this paper, layered ZnO nanowall networks were directly grown on Al substrates using a hydrothermal method without predepositing seed layers. The individual ZnO nanowalls with a thickness of several nanometers and a size of several hundred nanometers were (002) surface dominated, in which the preferential growth di…
The nanocrystalline boehmite, γ‐Al OOH , was synthesized by the hydrothermal method using AlCl 3 ·6H 2 O and urea as precursors, and the effect of different annealing temperatures resulting in different phases of alumina (Al 2 O 3 ) was obtained. The effects of different temperature on the phase and micrographs of the…
We employ cathodic plasma electrolysis method for the preparation of diamond-like carbon (DLC) and iron oxides composite film on T8 high-carbon steel. In our study, a continuous vapor envelope was broken down at a critical voltage, resulting in the plasma discharge at the near-cathode region. Active hydrogen, carbon,…
A versatile method for achieving atomic carbide-bonded graphene networks on both metallic and non-metallic substrates is described. This consists of vacuum-assisted thermal exfoliation and floatation of functional graphenes at elevated temperatures, followed by deposition on substrates and in situ formation of carbide…
We report on a method to extend the optical sensing capabilities of conventional RIFTS (reflective interferometric Fourier transform spectroscopy) biosensors for real-time detection of large microorganisms, such as bacteria and cells. Using macro porous silicon based 2D arrays of phase (lamellar) grating, we demonstra…
A new compound of formula (Bu4N)2[Mn2{Cu(opba)}2ox] (1) [Bu4N(+) = tetra-n-butylammonium cation, H4opba = 1,2-phenylenebis(oxamic acid), and H2ox = oxalic acid] has been synthesized and magneto-structurally investigated. The reaction of manganese(II) acetate, [Cu(opba)](2-), and ox(2-) in dimethyl sulfoxide yielded si…
Mechanochemical process has attracted a worldwide interest in the synthesis of nanomaterials since reactions can be run in solid state without any organic solvent. Therefore, this method is an environmentally friendly reaction. Cadmium oxide is a category of the practical semiconductor metal oxides, which is widely ap…
The superior performance of Zn-doped Sb7Te3 films might be favorable for the application in phase change memory. It was found that Zn dopants were able to suppress phase separation and form single stable Sb2Te crystal grain, diminish the grain size, and enhance the amorphous thermal stability of Sb7Te3 film. Especiall…
In this work, CdO cauliflower-like nanostructure synthesized by mechanochemical method was employed to evaluate the adsorption ability of Congo red (CR) from the aqueous solution for the first time. UV-visible absorption spectroscopy was used to record the adsorption behavior. This special structure composed of nanoro…
Multifunctional materials exhibiting photon upconversion show promising applications for biological imaging and sensing. In this study, we examine the solid-state upconversion emission of NaYF4:Yb,Er nanoparticles in the presence of iron oxide nanoparticles. Fe3O4 nanoparticles (6 nm) were mixed with NaYF4:Yb,Er nanop…