Materials Literature
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A polycarbonate (PC) microchannel network supporting gold nanowires was developed to be a SERS-active microchip. Observations of large increases in a Raman cross-section, allowed us to collect vibrational signatures which are not easily detectable by Raman techniques due to the high fluorescence level of bare PC. Comp…
Hybrid titanium dioxide (TiO2) nanostructures with engineered morphologies were produced by a simple synthetic approach based on cooperative sol-gel chemistry and self-assembly of amphiphilic poly(styrene-block-ethylene oxide) (PS-b-PEO) block copolymer (BCP) viaspin-coating common solutions of BCP and inorganic precu…
Collagen was isolated from the skin of soft-shelled turtle (Pelodiscus sinensis) by acid solubilization with pepsin. The yield of soft-shelled turtle collagen (STC) was 12.1% on a dry weight basis. The electrophoresis assay showed that STC consisted of a alpha(1)alpha(2) heterodimer similar to porcine collagen (PC). A…
First Order Reversal Curves (FORC) are polarization-field dependences described between saturation field Esat and a variable reversal field E,?(-Esat, Esat). The FORC diagrams were proposed to describe some characteristics of the switching process in ferroelectrics. The approach is related to the Preisach model which…
The derivative of the voltabsommetric scans, together with previous nano-electrogravimetric and X-ray diffraction results, allow different electrochemical processes to be distinguished during the Prussian blue (PB) voltammetric scan. Potassium, proton, and hydrated proton counterions involved in PB electrochemistry ar…
This paper specifically examines control of the residual stress in thin films by design of the stacking structure. For this study, we prepared highly a-, c- oriented PZT(30/70) (: PZT30) thin films using chemical solution deposition (CSD). A PZT30 thin film was deposited on LaNiO3 (LNO)/Pt/Ti/SiO2/Si and LNO/SiO2/Si w…
Sintering of (1 mol%Ni2+-1 mol%Er3+) or (1 mol%Mn2+-1 mol%Er3+) -doped Y2O3 polycrystal was investigated by conventional sintering at the sintering temperature in a range from 1200 to 1600°C. The sintering temperature required for full-densification decreased from 1600 to 1300°C by the doping. The average grain size i…
The value of a supramolecular assembly to enforce a closer interaction between a chiral auxiliary and a reaction center has been established using photoreactions of tropolone and cyclohexadienone derivatives. Two probe molecules utilized to establish the concept undergo 4 e- electrocyclization and oxa-di-pi-methane re…
In this study, n-ZnO/p-CuO heterojunction have been fabricated by sol-gel dip-coating technique which is simple and inexpensive. The structure of the p-CuO/n-ZnO was analyzed by X-ray diffraction spectroscopy and UV-VIS spectroscopy. The electrical junction properties were characterised by temperature dependent curren…
Herein is reported the synthesis of three new borinates (2a–2c) derived from bidentate imine ligands (1a–1c), which were prepared from the corresponding cinnamaldehyde derivatives. All compounds were characterized by MS, IR and NMR spectroscopy. The nonlinear optical (NLO) characterization of these molecules having pu…
Since the publication of the paper of [ V. Lehmann , F. Hofmann , F. Moeller , and U. Gruening , Thin Solid Films , 255 , 20 (1995) ], a great deal of effort has been produced to understand the basic mechanisms ruling the electron transport in Si mesostructures and how these phenomena are affected by the external envi…
Tsunami deposits are often characterized by specific diatom assemblages, which may indicate sediment provenance and help identify paleotsunami deposits. In the present study diatom assemblages were studied in tsunami deposits left by the 2004 tsunami in Thailand, as well as in beach sediments, inner shelf marine sedim…
We simulate the sedimentation in a parallelepipedic container of spheres and nonconvex particles constituted by two overlapping spheres. We use the self-written code SCoPI. Thanks to an efficient handling of contacts between particles, it allowed us to consider up to 100,000 spheres and 10,000 nonconvex particles. The…
UV photoactivation of a mixture of benzophenone and ammonium phosphomolybdate (APM) in the solid state splits adsorbed moisture, resulting in selectively hydroxylated benzophenone and leaving an electron trapped in green (reduced) solid APM.
The organic and metal-based electroactive sites in the novel organometallic ruthenium-acetylide-tetrathiafulvalene complex are shown to be strongly electronically coupled.
Cu-base alloys with 12.5 wt. % Al and 5 wt. % Mn with different amounts (0.05-2.00 wt.%) of boron or zirconium were prepared by ingot metallurgy route. The alloy ingots were homogenized followed by step quenching so as to obtain a structure that is completely martensitic. They were subsequently characterized by optica…
Gold nanoparticles functionalized with iron(II) terpyridine complexes undergo upon laser flash excitation long-lived charge separation in both conventional organic solvents and ionic liquids. The nature of the transient species depends on the laser excitation wavelength, 308 (Fe(tpyR)(2)(3+) and Au-) or 532 nm (solvat…
We propose several improvements to the Monte Carlo simulation techniques for lattice peptide adsorption on surfaces. Firstly, we examine the implementation of "pull" moves and discuss the most efficient way of selecting them. Secondly, we explicitly show how Wang-Landau sampling may be used to calculate the appropriat…
Using multifunctional organocations a novel heteropolyanion, [(P4W6O34)2Co2Na2(H2O)2]18-, with unprecedented structural features, has been observed, and extension of these clusters from molecules into 1D chains occurs through a dimeric cobalt species, with this material exhibiting reversible colour/magnetic susceptibi…
We studied the practical limitations of a linearly transformed invisibility cloak due to the loss and discretization.We found that in order for the cloaking applications to be practically useful, for example, to reduce the scattering by two orders, the maximum loss tangent allowed in the cloak needs to be of or within…