Materials Literature
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The formation energies of vacancies and their complexes in copper and nickel at zero and finite temperatures are calculated by the embedded-atom method in the quasi-harmonic approximation. The role of temperature effects in the formation of various atomic configurations of intrinsic point defects is studied.
Abstract Three new oxo‐centered trinuclear mixed‐bridged carboxylate complexes with terminal unsaturated ligands ([M 2 M′(μ 3 ‐O)(μ‐O 2 C 3 H 3 ) 5 (μ‐O 4 C 6 H 7 )(O 2 C 3 H 3 ) (H 2 O) 2 ]·2H 2 O [M = Fe, M′ = Fe ( 1 ); M = Fe, M′ = Cr ( 2 ); M = Cr, M′ = Fe ( 3 )]) have been synthesized and characterized by means o…
The copolymerization of ε-caprolactone (CL) and 1,5-dioxepan-2-one (DXO) was performed by sequential addition of monomers in lipase CA catalyzed ring-opening polymerization (ROP) at 60 °C in bulk. CL was first polymerized up to a monomer conversion of 95%, and then DXO was added to the reaction mixture. The polymeriza…
Abstract The corrosion process during the drying out of zinc surfaces confined in crevices was studied using real time photograpy and in situ FTIR microspectroscopy. A pH‐indicator was used to visualise differences in the pH during the drying process. The distribution and the composition of the corrosion products afte…
We have developed a model of lattice thermal conductivity in a freestanding three-layered Si∕Ge∕Si heterostructure. This model takes into account the phonon confinement and interface scattering. Moreover, we derive an analytical expression of the interface scattering rate for phonon conduction in a semiconductor heter…
The real-time conduction mechanism during bias stress of three silica-based intermetal dielectrics in Cu damascene structures was investigated. High-frequency capacitance and$I$–$V$measurements were intermittently inserted into the process of bias stress to monitor the conduction mechanism change with time. All experi…
Abstract A possibility of using a thermoplastic silicone elastomer (TPSE) for reduction of surface defects in the extrusion of wood‐filled metallocene polypropylene (mPP) has been investigated in this work. A capillary rheometer and a single‐screw extruder have been utilized to study the effect of the additive on the…
Single‐walled carbon nanotubes (SWNTs) and gold nanoparticles (GNPs) were functionalized with triphenylene moiety. These triphenylene‐functionalized nanomaterials were dispersed into the supramolecular order of hexaalkoxytriphenylene derivatives. The functionalized‐nanomaterials‐discotic liquid crystal composites were…
Nanoparticles of spinel ferrites Mn x Zn 1- x Fe 2 O 4 with x = 0.0 to 1.0 were prepared by co-precipitation method. The ferrite samples were pre-sintered at 200°C at the rate of 200°C/h for 15h. Finally, one set of samples was sintered at 400°C and the other set at 500°C at the rate of 200°C/h for another 15h. The sp…
A large linearly graded structure on atomic scale up to 88 at. %/mm with oriented grown crystals was formed in selenium-tellurium (Se-Te) semiconductor using a strong gravitational field of one million G level at 260 °C. The lattice constants and the binding energies of Se and Te 3d electrons continuously changed alon…
Nonpolar crystal orientation showed a positive effect on the chemical bonding states of nitrogen-doped ZnO (ZnO:N) for attaining p-type conductivity. Remote-plasma-enhanced metalorganic chemical vapor deposition (RPE-MOCVD) was used to grow nonpolar- and polar-orientated films on R -plane and a -plane sapphires, respe…
Despite decades of research, progress in cancer chemotherapy is relatively slow, hampered, in part, by the lack of appropriate mechanisms to deliver anticancer drugs selectively to tumor tissues. This is a challenging task, as various cellular, anatomical and physiological barriers impede effective delivery of drugs t…
Photo‐oxidation studies on polypropylene (PP)/organoclay nanocomposites were performed. Nanocomposites of isotactic (iPP) and syndiotactic (sPP) polypropylene were prepared by melt compounding. The nanofiller was Boehmite Disperal OS2–alumina hydrates (Al(OH)O) modified by C10–C13 alkylbenzene sulfonic acid. The nanof…
The color fastness to washing of silk fibers dyed with scarlet dye was improved by the deposition of a thin polymer film which prevented desorption of the dye in standard soap solution. Dyed silk fibers were coated with polyelectrolytes multilayers (PEM) by following the so-called layer-by-layer deposition method in w…
Highly conductive and transparent Al-doped ZnO (AZO) thin films were prepared from a zinc target containing Al (1.5 wt.%) by direct current (DC) and radio frequency (RF) reactive magnetron sputtering. The structural, optical, and electrical properties of AZO films as-deposited and submitted to annealing treatment (at…
PbO-Ga 2 O 3 -P 2 O 5 glasses containing different amounts of Cr 2 O 3 , ranging from 0 to 1.0 mol%, were prepared. The dielectric properties (viz., constant ε’, loss tanδ , ac conductivity σac over a wide range of frequencies and temperatures, dielectric breakdown strength) have been studied as a function of the conc…
We fabricated a hybrid structure composed of a dye-doped low-molecular-weight cholesteric liquid crystal (low CLC) sandwiched between polymer cholesteric liquid crystal (PCLC) films with the same handedness as the low CLC, and studied its lasing characteristics. Defect-mode lasing was observed with a threshold reduced…
In the last few years we have analysed the factors that affect the structures and luminescence properties of Au(I) compounds, specifically in relation with the presence of aurophilic contacts and their application as cation probes. EXAFS studies have allowed us to obtain for the first time direct structural data of di…
Densities of coherent-scattering lengths in an oxide ion conductor La 0.64 (Ti 0.92 Nb 0.08 )O 2.99 with a double perovskite-type structure (space group P 4/ mmm ) are determined using neutron powder diffraction data by a whole-pattern fitting approach based on the maximum-entropy method. At temperatures of 496 °C, 10…
We have successfully demonstrated a world smallest 0.25 μm2cell 1T1C 64 Mb FRAM at a 130 nm technology node. This small cell size was achieved by scaling down a capacitor stack, using the following technologies: a robust glue layer onto the bottom electrode of a cell capacitor; 2-D MOCVD PZT technology, novel capacito…