Materials Literature
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The surface of Pd@SiO(2) core-shell nanoparticles (1) was simply modified by the formation of nickel phyllosilicate. The addition of nickel salts formed branched nickel phyllosilicates and generated pores in the silica shells, yielding Pd@SiO(2)-Niphy nanoparticles (Niphy = nickel phyllosilicate; 2, 3). By removal of…
Ultrathin gold island films on transparent substrates display a characteristic surface plasmon (SP) absorption band in which the peak position and full width at half-maximum (fwhm) are highly sensitive to the film morphology. In the present study, we investigated the temperature dependence of morphological evolution a…
The effects on the 4f and 5d levels of Ce3+ of its first coordination shell geometry in Ce-doped oxides with a D2 8-fold site, like garnets, are studied with embedded cluster, wave function based ab initio methods. The only deformations of a CeO8 cube that are found to shift the lowest 4f-5d transition to the red are…
The purpose of this paper is to evaluate the protective ability of 1-(2-aminoethyl)-2-oleylimidazoline (AEOI) and 1-(2-oleylamidoethyl)-2-oleylimidazoline (OAEOI) as corrosion inhibitors for N80 steel in 15% hydrochloric acid, which may find application as eco-friendly corrosion inhibitors in acidizing processes in pe…
Metal-semiconductor hybrid heteronanostructures may exhibit synergistically reinforced optical responses and significantly enhanced optical tunability that essentially arise from the unique nanoscale interactions between the metal and semiconductor components. Elaboration of multi-component hybrid nanoparticles allows…
We present a simple strategy to achieve excellent dielectric and nonlinear current–voltage properties for pure– CaCu 3 Ti 4 O 12 ceramics prepared by a modified sol–gel method with different calcining conditions. At 1 kHz and room temperature, the best CCTO ceramic can exhibit a high dielectric constant (ε′) of 9516 w…
The distance dependence and atomic-scale contrast observed in nominal contact potential difference (CPD) signals recorded by KPFM on surfaces of insulating and semiconducting samples, have stimulated theoretical attempts to explain such effects. We attack this problem in two steps. First, the electrostatics of the mac…
Y 2/3 Cu 3 Ti 4 O 12 ceramics were successfully prepared by the conventional solid‐state reaction method. Effects of sintering conditions on microstructure, phase structure, and the dielectric properties of Y 2/3 Cu 3 Ti 4 O 12 ceramics were investigated in detail. Y 2/3 Cu 3 Ti 4 O 12 ceramics sintered at 1010°C for…
We describe a model that rationalizes amplification of chirality in cooperative supramolecular copolymerization. The model extends nucleation-elongation based equilibrium models for growth of supramolecular homopolymers to the case of two monomer and aggregate types. Using the principle of mass-balance for the two mon…
Recent studies have revealed that single-layer transition-metal oxides and dichalcogenides (MX 2 ) might offer properties superior to those of graphene. So far, only very few MX 2 compounds have been synthesized as suspended single layers, and some of them have been exfoliated as thin sheets. Using first-principles st…
A new complex [Mg(L)2(phen)(H2O)2](phen)(H2O)2 [L= N-benzenesulphonyl-L-leucine] was synthesized by the reaction of magnesium chloride hexahydrate with N-benzenesulphonyl-L-leucine and 1,10-phenanthroline in the CH3CH2OH/H2O (v:v = 5:1). It was characterized by elemental analysis, IR and X-ray single crystal diffracti…
The transition metal-dependent spin-orbit coupling (SOC) and outer-core (5s5p) correlation effects in Ir- and Pt-catalyzed C-H activation processes are studied here using high level ab initio computations. The catalysts involve complexes with oxidation states: Ir(I), Ir(III), Pt(0), and Pt(II). It is demonstrated that…
The eigenstates in the presence of a step defect (SD) along the $x$ or $y$ axis on the surface of topological insulators are exactly solved. It is shown that unlike the electronic states in conventional metals, the topological surface states across the SD can produce spin rotations. The magnitudes of the spin rotation…
For Extreme Ultra-violet Lithography (EUVL) targeting at 11nm and beyond design rules, the minimum printable EUVL multilayer (ML) mask defect size can be as small as 20-25nm. As a result, the defect-free EUVL ML mask blank fabrication remains the top challenge for EUVL mask. Aspects of this challenge include high qual…
3,6-Substituted tetrazines 2 (a: R(2) = 2-pyridyl or b: CO(2)Me) react with 2,3,9,10-(R(1))(4)-dihydro-6,13-ethenopentacene 3 in solution at elevated temperature to the corresponding pentacene 1 (a: R(1) = H, b: OBn, c: F).
The effects of poly(ethylene glycol) (PEG) molecular weights on nano hydroxyapatite (n-HA) crystal growth were studied, and a possible mechanism was proposed. n-HA crystals were synthesized in the presence of PEG with different molecular weights via hydrothermal method. Transmission electron microscopy (TEM) analysis…
Two novel chiral lanthanide–sulfate frameworks, Ln 4 (OH) 4 (SO 4 ) 4 (H 2 O) 3 [Ln = Y ( 1 ) and Er ( 2 )], have been synthesized under hydrothermal reactions. X-ray crystal structure analyses reveal that 1 and 2 are isomorphous and crystallize in the orthorhombic space group P 2(1)2(1)2(1). Both compounds are isostr…
The major challenge for EUV resists at 22 nm half-pitch and below continues to be simultaneously achieving resolution, sensitivity, and line-width roughness (LWR) targets. An ongoing micro-exposure tool (MET) based evaluation of leading resists throughout 2011 shows that incremental progress toward meeting requirement…
In this work, we introduce a method to automatically compute the basis set superposition error (BSSE) for large clusters and introduce a correction scheme to improve the accuracy of incrementally expanded coupled cluster energies (CCSD(T)) using the domain-specific basis set approach. The key step for the automatic BS…
Reaction of a balance-like dipodal ligand 2,6-bis(pyridiyl) hexahydro-4,8-ethenopyrrolo [3,4-f]isoindole-1,3,5,7-tetrone (3-pybtd) with various Cd(II) salts afforded eight complexes, namely, [Cd 2 (3-pybtd) 2 (NO 3 ) 4 (C 2 H 5 OH) 2 (H 2 O) 2 ] ( 1 ), [Cd 2 (3-pybtd) 2 (SiF 6 ) 2 (DMF) 4 (H 2 O) 2 ](H 2 O) 4 ·(DMF) 2…