Materials Literature
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The density crossover scaling of thermodynamic and conformational properties of solutions and melts of self-avoiding and highly flexible polymer chains without chain intersections confined to strictly two dimensions (d = 2) is investigated by means of molecular dynamics and Monte Carlo simulations of a standard coarse…
A unified mean-field molecular theory of nematic (N(U)), smectic A (SmA), and smectic C (SmC) liquid crystal phases, composed of uniaxial nonpolar molecules, is developed taking into account the variation of all orientational and translational order parameters in these phases. Numerical results, obtained by direct glo…
CuGaTe 2 has recently been reported to have a high thermoelectric (TE) figure of merit ( Z T ) of 1.4 at 950 K [T. Plirdpring et al.: Adv. Mater. 24 (2012) 3622]. However, the Z T values of CuGaTe 2 in the low and middle temperature ranges are not high, due to high lattice thermal conductivity (κ lat ) in those temper…
Abstract A series of poly(ethylene glycol) hexadecyl ether (Brij58)/porous active carbon ( AC ) composites were fabricated via a physical method, and their crystallization behavior was characterized in detail using thermogravimetric analysis, X‐ray diffraction ( XRD ) and differential scanning calorimetry. The Brij58/…
Hydrogen-trapping sites were directly observed by using a three-dimensional atom probe (3DAP) in high-strength mooring chain steel. Three typical 3DAP datasets show that trapping hydrogen is mainly enriched in retained austenite, and secondarily in carbides. In addition, these interfaces between ferrite and carbide ar…
In this work, we studied the valence tautomerism process on two different Co-dioxolene complexes by means of transient infrared spectroscopy (TRIR). The molecules investigated are ls-Co(III)(Cat-N-BQ)(Cat-N-SQ) (DQ2) and [ls-Co(III)(tpy)(Cat-N-SQ)]PF6 (tpy), where Cat-NBQ = 2-(2-hydroxy-3,5-ditert-butylphenyl-imino)-4…
Zusammengeheftete Untereinheiten: Die begrenzte Stabilität von Multimeren (siehe Bild) wird oft mit der Dissoziation der Untereinheiten in Verbindung gesetzt. Ein neues, auf Kristallstrukturanalyse, Sequenzalignment und Sättigungsmutagenese basierendes Verfahren wurde genutzt, um systematisch Proteinreste in der Grenz…
Cold crystallization of poly (l-lactide)/poly (d-lactide) blends at low temperatures results in the formation of a stereocomplex with loose intermolecular packing. Upon heating, it undergoes significant reorganization into a compact one with an extremely high melting point via a solid–solid transition. In contrast, th…
Abstract The fabrication and characterization of dry adhesives treated with silver (Ag) nanoparticles presenting enhanced adhesion and antibacterial properties is described. A one‐step procedure for the dispersion of Ag nanoparticles in polydimethylsiloxane (PDMS) is implemented, achieving a uniform distribution of pa…
The present work reports the synthesis of transparent (∼60–80% transmission) WO 3 thin films by electrodeposition using peroxotungstic acid (PTA) solutions containing different carboxylic acids (formic, oxalic, and citric) of varying concentrations. The effects of these acids on the deposition kinetics and the morphol…
Recent military operations have highlighted the need for modernisation of airfield damage repair capabilities for concrete pavements to eliminate long closure periods. Damaged or distressed military airfield pavements must be repaired using expedient methods and durable materials to minimise the time the pavement is r…
Abstract Magnesium‐based hydrogen storage materials (MgH 2 , Mg 2 NiH 4 , and Mg 2 Cu‐H) were prepared and their structures were determined by XRD and ICP investigations. Mg 2 NiH 4 has a monoclinic crystal structure and Mg 2 Cu‐H is a mixture of MgCu 2 and MgH 2 . The effects of magnesium‐based hydrogen storage mater…
Rapidly solidified strips were used to produce Sm0.7Dy0.1Gd0.2(CobalFe0.2Cu0.08Zr0.025)7.2magnets with better temperature stability of remanence. The phase and microstructure of strips and ingots were studied by scanning electron microscope (SEM) and X-ray diffraction (XRD). The microstructure of strips showed dendrit…
We present the mapping of the full plasmonic mode spectrum for single and aggregated gold nanoparticles linked through DNA strands to a silicon nitride substrate. A comprehensive analysis of the electron energy loss spectroscopy images maps was performed on nanoparticles standing alone, dimers, and clusters of nanopar…
First-principles calculations set the comprehension over performance of novel cathodoluminescence (CL) properties of BaZrO3 prepared through microwave-assisted hydrothermal. Ground (singlet, s*) and excited (singlet s** and triplet t**) electronic states were built from zirconium displacement of 0.2 Å in {001} directi…
l-Lactide (l-LA) was polymerized in the presence of N-methyldiethanolamine as an initiator and Sn(Oct)2 as a catalyst to give hydroxy-telechelic poly(l-lactide) (PLLA-diol) bearing a tertiary amine group at the center of the polymer chain. Successive chain extension of the PLLA-diol with hexamethylene diisocyanate aff…
The effects of A site occupation on the structure, dielectric, and re-entrant relaxor behaviors were studied for Ba5LaxSm1−xTi3Nb7O30 (x = 0.1, 0.25, 0.5) tungsten bronze ceramics. The tetragonal tungsten bronze structure in space group P4bm was indicated for all compositions. The dielectric and ferroelectric properti…
Abstract Oxygen isotope exchange experiments, H 2 18 O/H 2 16 O (”wet” anneals) and 18 O 2 / 16 O 2 (”dry” anneals), were performed on single crystal samples of yttria‐stabilized zirconia (YSZ) at a temperature of T = 1073 K with subsequent determination of the oxygen isotope profiles in the solid by time‐of‐flight se…
A facile widely spread technique employed to produce low-cost high-yield oxide powders, combustion synthesis, was used to prepare yttrium oxyfluoride crystalline ceramic powders. The structure of the powders was analyzed by X-ray powder diffraction and Rietveld refinement. Samples heat treated at 700 °C had a predomin…
We have developed a superabsorbent composite based on cellulose, namely poly(acrylic acid)-modified poly(glycidylmethacrylate)-grafted nanocellulose (PAPGNC), via graft copolymerization technique, and it is well characterized. The adsorption of a globular protein, hemoglobin (Hb), onto PAPGNC was studied by batch-adso…