Materials Literature
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We have investigated the role of the easy axis in the photoalignment effect induced by an Ar + linearly polarized laser beam on a dye-doped nematic liquid crystal cell in a pump–probe experiment. The induced permanent structure in the irradiated zones was studied using a polarizing optical microscope, and the laser-in…
adopted for cotton fi bre quality assessment, little effort has been made to unravel the relationship between the two. In the latest study, 5 we have not only demonstrated the consistency of strength readings between two instruments if the strength readings were divided by cotton micronaire, but also developed a bette…
Eighteen two-ring and 100 three-ring benzenoid amides were synthesised using a solid-phase combinatorial method involving acylation or benzoylation and palladium(0)-catalysed carbonylation of a secondary amine, obtained by the reductive amination of 4-iodoaniline and a backbone amide linker. The purity of the products…
Abstract The ultrafast dynamics of a unique polythiophene derivative that has a degenerate ground state due to a quantum mechanical resonance was investigated using a sub‐5‐fs pulse laser. The method allowed us to study the electronic relaxation and vibrational dynamics in completely same conditions at the same time.…
A series of experiments were conducted to study the fundamental fire and thermal properties of glass-reinforced polyester (GRP) panel material. Both bench-scale and room-scale tests were performed. The GRP was characterized using TGA, DSC, and cone calorimetry. Several predicting models, such as heat release index mod…
Volumetric heat removal in high-performance 3D chip stacks can be performed by means of interlayer cooling. The heat is absorbed in water, which is pumped in the liquid phase into the cavities between the active layers. Individual through-silicon vias (TSV), which maintain the electrical communication between the laye…
The use of a fluorescent probe for inferring the temperature constitutes a simple and cost-effective method that provides semi-invasive thermal imaging with a reasonably good temporal and spatial resolution in either dry or liquid phases. Here, we propose to use a two-component luminescent thermometer comprised of spi…
We determined the thermal properties of thermal interface materials (TIMs) based on carbon nanotubes (CNTs) and commercial TIMs. The thermal conductivity of different fillers such as CNTs, graphite, nano-diamond, metal, and metal oxide particles (copper and zinc oxide) at different concentrations were studied with a t…
The paper reviews preparation of pharmaceutically active substances intercalated in layered double hydroxides (LDH). A number of such reports have been published mainly in the last decade. The intercalation of various pharmaceuticals, e.g. nonsteroidal anti-inflammatory drugs, antihypertensives, antibiotics, or antica…
A tube Ge(60)H(60) isomer in D(5d) symmetry with fused five-membered rings located at the ends of the tube is more stable than the fullerene-like I(h) cage isomer at the B3LYP/cc-pVDZ level of theory. Introducing endo Ge-H bonds increases the stability of both cage and tube isomers. The most stable tube isomer can adm…
We have used high resolution neutron vibrational spectroscopy to study the vibrations of the model compound for arene-to-metal bonding, benzene chromium tricarbonyl, and its mesityl analogue. It is shown that all previously published assignment schemes, based on optical spectroscopy alone, are wrong, and new assignmen…
Guanidine hydrochloride (GdnHCl) denaturation of native and Ca- depleted Bacillus licheniformis α-amylase (BLA) was investigated both in the absence and presence of 2 mM calcium chloride (CaCl 2 ) using circular dichroism, fluorescence spectroscopy and biological activity. In both states (Cadepleted and native form),…
Irradiation effect in C60 films induced by 170 keV B ion was investigated by means of Fourier transform infrared (FTIR) and Raman spectroscopies. The damage cross section σ and the effective damage radius R are deduced from the experimental data of all four IR active modes and evident four Raman active modes of C60 mo…
A new method has been developed to synthesise bis η(5)-cyclopentadienyl dithiolene complexes of molybdenum and tungsten. This procedure involves the in situ thermolysis of the azo compounds, 2,2'-azobisisobutyronitrile (AIBN) or 1,1'-azobiscyclohexanecarbonitrile (ACCN) (R'(2)N(2), R' = CMe(2)CN or C(6)H(10)CN, respec…
Strain can reduce carrier mobility and the reliability of electronic devices and affect the growth mode of thin films and the stability of nanometer-scale crystals. To control lattice strain, a technique for measuring the minute lattice strain at surfaces and interfaces is needed. Recently, an extremely asymmetric x-r…
Abstract The ability of tin (Sn) to capture vacancies in silicon material attracts considerable interest in relation with electronic applications where radiation hardness is necessary. In this sense the full knowledge of the behavior of radiation‐induced defects in Sn‐doped Si is particularly important. The present re…
In epitaxial heterostructures Pb0.5Sr0.5TiO3/La0.5Sr0.5CoO3/MgO(001) with a large lattice mismatch, ferroelectric domains and properties were experimentally studied. In 130 nm thick polydomain tetragonal Pb0.5Sr0.5TiO3 films, random arrays of ∼0.1–0.5 μm sized a- and c-domains are found. In vertical capacitors with Pt…
ABSTRACT Anhydrous magnesium chloride is the preferred raw material for electrolytic production of magnesium metal; however, it is not possible to fully dehydrate magnesium chloride by heating in air because of hydrolytic decomposition. The dehydration should be carried out in hydrogen chloride gas atmosphere, or by a…
Saccharomyces cerevisiae Hsp33/YOR391Cp is a member of the ThiI/DJ-1/PfpI superfamily. Hsp33 was overexpressed in Escherichia coli and its crystal structure was determined at 2.40 Å resolution. Structural comparison revealed that Hsp33 adopts an α/β-hydrolase fold and possesses the putative Cys-His-Glu catalytic triad…
We report the properties of an ultrathin Al2O3–TiO2 dielectric stack with the equivalent-oxide thickness =1.0 nm. The stack exhibits nondiscernable interfacial layer on Si, and absence of serious Al2O3–TiO2 intermixing. Inelastic electron tunneling spectroscopy (IETS) has been used to provide a wealth of information c…