Materials Literature
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We report on the development of an angular-dependent interatomic potential for hydrogen and the aluminum-hydrogen system. The potential reproduces properties of diatomic hydrogen gas, accurate solution energies of hydrogen atoms in crystalline Al, the energetic preference of the tetrahedral interstitial site occupatio…
We have investigated the influence of Fe excess on the electrical transport and magnetism of ${\text{Fe}}_{1+y}{\text{Te}}_{0.5}{\text{Se}}_{0.5}$ ($y=0.04$ and 0.09) single crystals. Both compositions exhibit resistively determined superconducting transitions $({T}_{c})$ with an onset temperature of about 15 K. From…
Silver pyrazolates with columnar liquid-crystal phases that are stable at room temperature have been prepared by reaction of silver nitrate with 3,5-diarylpyrazolates. The complexes consist of open-chain oligomers, despite the fact that the most common structural type for homoleptic coinage metal pyrazolates is the tr…
Preparation of the catalyst has been performed using the direct reaction between the multi-walled carbon nanotubes and zerovalent palladium complex with the easily removed ligand, dibenzylideneacetone, dba. TEM microphotos have been obtained and metal particles dimension measured. Coupling reactions of Suzuki-Miyaura,…
Crystallization and melting are fundamental thermal processes in crystalline polymers. In contrast to recent considerable efforts to simulate molecular processes of crystallization, investigations of melting in polymer crystals are still rare. The present report deals with molecular dynamics modeling of melting in cha…
It is becoming increasingly common to use gold nanoparticles (AuNPs) protected by a heterogeneous mixture of thiolate ligands, but many ligand mixtures on AuNPs cannot be properly characterized due to the inherent limitations of commonly used spectroscopic techniques. Using ion mobility-mass spectrometry (IM-MS), we h…
Here, we describe a novel bacterium, strain TUD-YJ37(T), which can accumulate polyhydroxybutyrate (PHB) to more than 85 % (w/w) dry cell weight. The bacterium was isolated from a mixed-culture bioreactor by using a feast-famine regime and its properties were characterized. Phylogenetic analysis based on full 16S rRNA…
Hydrogels prepared from a mixture of fibrin and high-molecular weight (MW) hyaluronic acid (HA) were found to be suitable scaffolds for chondrocyte seeding and pig knee cartilage regeneration. Collagen in the hydrogels is not necessary for the formation of biomechanically stable tissue. Regenerated cartilage showed ve…
The structure and stability of dimeric Mo(VI) oxide species on γ-alumina are investigated with a periodic DFT approach. A large number of Mo dimers of various geometries, located on the (100) and (110) surfaces of γ-Al 2 O 3, are modeled. The most stable dimeric species on the (100) plane are mixed dioxo−monooxo or do…
We studied the energy transfer between CdSe core/shell quantum dots (QDs) and 1,3,5-tris( N -phenylbenzimidazol-2,yl) benzene (TPBI) in inorganic/organic blend films using steady-state and time-resolved photoluminescence (PL) spectroscopy. The shortening in PL lifetime of TPBI molecules and the resulting lengthening i…
Medium scale integrated circuits with more than 100 carbon nanotube (CNT) thin-film transistors (TFTs) have been successfully fabricated. These are the largest CNT-based integrated circuits reported so far. Our fabrication technology features a buried back-gate architecture made by CNT growth using plasma-enhanced che…
Single-walled carbon nanotubes (SWNTs) dispersed by sodium dodecyl sulfate (SDS) can be simply and effectively separated into semiconducting (s) and metallic (m) fractions by the method of agarose gel electrophoresis, in which s-SWNTs cannot migrate like m-SWNTs and remain unmoved under electric field. The role of SDS…
Mesoporous silica and niobia thin films are fabricated by using precursor solutions including PS-b-PEO diblock copolymers. The mesopore arrangements are strongly affected by dip-coating speeds during the film formation. With the decrease of the coating speeds, the mesopores were more closely packed each other.
The origin of the dissipation in liquid foams is not fully understood, especially in the large deformation, large velocity regime. Numerical simulations, now very accurate in the quasi static regime, are still sparse in the dissipative regime, and are all based on restrictive assumptions or very small bubble numbers.…
Abstract We report treatment of multi‐walled carbon nanotubes (MWCNTs) by dielectric barrier discharge plasma followed by their exposure to NH 3 , which are to be used for making poly(methyl methacrylate) (PMMA) based nanocomposites. First MWCNTs were treated by He plasma and then exposed to NH 3 . Fourier transform i…
The process of development of reliable and eco-friendly metallic nanoparticles is an important step in the field of nanotechnology. To achieve this use of natural sources like biological systems becomes essential. Parkinson’s disease is a degenerative neurological disorder that is prevalent throughout the world. The p…
Mechanically flexible butyl rubber–SrTiO 3 composites were prepared through sigma mixing followed by hot pressing. Tensile tests established the mechanical flexibility of the composites. Swelling tests revealed the degree of matrix–filler interactions. The effect of SrTiO 3 ceramic filler on the dielectric properties…
Titanate nanosheets (TiO-NS) and nanotubes (TiO-NT) were prepared under hydrothermal or solvothermal conditions in varied alkali solutions following similar procedures. Relatively low alkalinity (5M NaOH) was associated with TiO-NS, but high alkalinity (10M) resulted in TiO-NT. Addition of low-boiling point organic so…
Double-stranded copper(II) string complexes of varying nuclearity, from di- to tetranuclear species, have been prepared by the Cu(II)-mediated self-assembly of a novel family of linear homo- and heteropolytopic ligands that contain two outer oxamato and either zero (1 b), one (2 b), or two (3 b) inner oxamidato donor…
Composite thin films containing cellulose nanocrystal (cellN) polyanions embedded between either poly(diallyldimethylammonium chloride) (PDDA) or chitosan were fabricated using the layer-by-layer (LBL) deposition technique. The in-plane and out-of-plane elastic constants of the composites were measured using Brillouin…