Materials Literature
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The technique of temperature dependent vibrational pumping in surface enhanced Raman scattering (SERS) has been recently demonstrated as a promising new tool to estimate SERS cross-sections. In this paper we expand on the previous developments and study several details around the implementation and physics of the vibr…
The effect of Cu substrate etching on electrical properties of electrochemically deposited CuO was investigated. Four different etching methods were compared in this study—no etching, chemically etched in , ex situ electrochemically etched in , and in situ electrochemically etched in the deposition solution. Surface r…
A novel method to obtain the dispersion diagram of a composite right/left-handed (CRLH) unit-cell is presented. This method is based on CRLH transmission-line (TL) theory and on the structure eigenfrequencies. First, it is shown that computing the dispersion diagram of an M unit cell CRLH TL only needs three eigenfreq…
We propose novel methods of depth-resolved EELS (DREELS) and chemical state mapping, and the techniques were applied to the cross-sectional TEM (XTEM) sample of N+ implanted TiO2 catalyst. DREELS is realized by applying the Pixon deconvolution to a conventional energy-filtering TEM (EFTEM)-based spatially resolved EEL…
Nonoxide glasses composed of halides and/or chalcogenides (sulfides, selenides, and tellurides) as their main components have been extensively investigated due to their characteristic structures and properties. Among them, the present review focuses on glass formation based on nonfluoride-halide (halides other than fl…
Despite limited spectral overlap and quite wide spatial separation, essentially quantitative electronic energy transfer occurs from peripheral Bodipy units to an expanded Bodipy core, the latter being attached via its B centre, so as to generate near-IR fluorescence.
The Bi-O interactions and the Bi lone-pairs in monoclinic BiB3O6 are investigated with gradient-corrected hybrid B3PW density functional theory within the Gaussian-orbital-based CO-LCAO scheme. The Bi 6s and O 2p orbitals contribute to both bonding and antibonding interactions below the Fermi level. The stereochemical…
Chiral enhancement effects associated with supramolecular liquid crystalline structures are studied, using a complex of achiral molecules (4,4′-bipyridine, 4Bpy) and chiral cholesteric liquid crystalline molecules (3-cholesteryloxycarbonylpropanoic acid, C4) as the model system. Non-mesogenic achiral molecule 4Bpy is…
<abstract language="eng">Phytochemical investigation of the bark of Cenostigma macrophyllum (Leguminosae-Caesapinioideae) resulted in the isolation and identification of valoneic acid dilactone, ellagic acid, lupeol, alkyl ferulate, four free sterols (cholesterol, campesterol, stigmasterol and sitosterol), a mixture o…
Novel solid-emissive indeno[1,2-b]benzo[4,5-e]pyran-11-one-type fluorophores having non-planar structures with sterically hindered substituents (R = butyl, phenyl, and thienyl) have been designed and conveniently synthesized. The fluorescence quantum yields of in 1,4-dioxane were (Phi = 0.053) >> (Phi = 0.013) > (Phi…
A pump-probe thermoreflectance technique is used for the nondestructive evaluation of thermal and acoustic properties of Si∕Si0.7Ge0.3 superlattice (SL) at room temperature. In particular, this technique allows the determination of the metal transducer/SL thermal boundary resistance, the SL cross-plan thermal conducti…
The authors report on the realization of an enhanced process protocol for producing sub-20nm wide lines with extremely narrow pitches in electron beam resist using a low temperature development process. Linewidths ranging from 10to50nm with a pitch range of 40–250nm have been fabricated on 8in. silicon wafers, using a…
ATR-FTIR apparatus is used to measure the curing rate of PMDA-ODA polyimide film in order to avoid sinusoidal interference fringe. From the corrected height method, the curing rate is found to have positive correlative trend with the curing temperature. It was shown that the curing rate under 300 °C is 92.1% than that…
The iron(II) complex of the 1 : 3 Schiff base condensate of tris(2-aminoethyl)amine (tren) with 2-imidazolecarboxaldehyde, H3L1, [FeH3L1](ClO4)2, was reacted with MClO4 (M = K, Rb, Cs, and NH4). The products were double salts of the formula {[FeH3L1](ClO4)2}·MClO4. The complexes have been characterized by Elemental An…
Covalent assembly between gold-thiolate nanoparticles (AuNPs) and the cluster [Fe(eta(5)-C(5)H(5))(mu(3)-CO)](4), 1, can be achieved either by direct Brust-Schriffin-type synthesis using a mixture of undecanethiol and a thiol functionalized with , or by substitution of undecanethiolate ligands in AuNPs by thiolate lig…
In this study, octadecylamine modified MMT (C18-MMT) filled SBR nanocomposites were manufactured using a latex method and a compounding method. Cure characteristics and mechanical properties of SBR compounds filled with C18-MMT, Cloisite 15A, carbon black and Na-MMT were also evaluated. By using the latex method, the…
Cu–Al–O films were prepared on quartz glass substrates at 500–700 °C by sputtering the Cu and Al targets alternately on atomic-layer scale under an Ar-diluted O 2 (5–20%) gas atmosphere, and then annealed at 1050 °C under a nitrogen atmosphere. The [Cu]/[Al] ratio was controlled by changing the Cu and Al deposition pe…
This paper presents a study of the practical issues that need to be addressed by the engineering approaches to the incorporation of iron loss calculations into analytical and numerical models of AC motors. The total iron loss is estimated by summing up different loss components according to the analysed engineering ap…
Silica glass is an important optical material in deep-ultraviolet (DUV, λ≤300 nm) and vacuum-ultraviolet (VUV, λ≤200 nm) spectral regions. However, DUV-VUV transparency of silica glass is significantly influenced by the presence of structural imperfections (point defects). This article describes point defects in silic…
A switchable and chromophoric Schiff base, containing an enolizable barbiturtic acid moiety as a novel UV/vis probe, is presented that can synergistically measure both polarity effects and hydrogen bonding patterns.