Materials Literature
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Abstract The effects of agglomerated versus deagglomerated multiwalled carbon nanotubes on the thermal and mechanical characteristics of polyethylene oxide were studied. The specimens were prepared via solution‐sonication method, using two procedures. In the first procedure, CNT‐PEO solutions were prepared with as‐rec…
Ultrathin polymer brushes play important roles in natural and artificial systems. To better understand and utilize their unique behaviors, characterization is a fundamental, but not trivial, task. In this paper, we demonstrated that the quartz crystal microbalance with dissipation (QCM-D) could be applied to study ult…
The properties of amphiphilic block copolymer membranes can be tailored within a wide range of physical parameters. This makes them promising candidates for the development of new (bio)sensors based on solid-supported biomimetic membranes. Here we investigated the interfacial adsorption of polyelectrolyte vesicles on…
Using wood and other natural fibers with thermoplastic materials is always associated with a problem: poor compatibility between wood fibers and thermoplastic matrix. This paper deals with the mentioned problem and tries to solve, or at least ease, it through pre-heat treatment of wood prior to blending of wood fibers…
An in situ combined high-temperature high-pressure synchrotron radiation diffraction study has been carried out on $\mathrm{Li}\mathrm{B}{\mathrm{H}}_{4}$. The phase diagram of $\mathrm{Li}\mathrm{B}{\mathrm{H}}_{4}$ is mapped to $10\phantom{\rule{0.3em}{0ex}}\mathrm{GPa}$ and $500\phantom{\rule{0.3em}{0ex}}\mathrm{K}…
A hyperbranched aliphatic polyester has been functionalized with PEG chains to afford a novel water-soluble BH40-PEG polymer which exhibits unimolecular micellar properties, and is therefore appropriate for application as a drug-delivery system. The solubility of the anticancer drug paclitaxel was enhanced by a factor…
Previous studies have demonstrated that heterologous expression of PHA synthase from Aeromonas caviae (PhaC Ac ), capable of accepting (R)-3-hydroxyacyl-CoA of C 4 –C 7 as substrates, could confer the ability to PHA-negative mutant of Cupriavidus necator PHB - 4 to synthesize poly((R)-3-hydroxybutyrate-co-(R)-3-hydrox…
We report the use of a novel UV-sensitive self-assembled monolayer to selectively deposit single-walled carbon nanotubes from solution using heterogeneous surface wettability. This process combines ubiquitous photopatterning techniques with simple solution processing to yield highly selective and densely packed carbon…
To elucidate forces providing high mechanical strength during formation of carbon nanotube (CNT) yarns and sheets, internanotube static friction force was investigated using a transmission electron microscope with a nanomanipulation system. Results show that the static friction force depends strongly on the CNT surfac…
The single crystalline nanobelts were successfully fabricated with an ionic compound by a simple reprecipitation method. The compound used is the water-insoluble derivative of tris(bipyridine) Ru(II), [Ru(bpy)2(4,4'-(CH3(CH2)14COO)2-bpy)](ClO4)2. The prepared nanobelts show an enhanced fluorescence emission and relati…
Elastic scattering of 5-30 eV electrons within the B-DNA 5'-CCGGCGCCGG-3' and A-DNA 5'-CGCGAATTCGCG-3' DNA sequences is calculated using the separable representation of a free-space electron propagator and a curved wave multiple scattering formalism. The disorder brought about by the surrounding water and helical base…
BaSnO 3 nanoparticles and (Bu 4 N) 2 (Ru)(dcbpyH) 2 (NCS) 2 (called N719)-sensitized BaSnO 3 nanoparticles were prepared by the sol−gel method. The structures and optical absorption spectra of the samples were examined with X-ray diffraction and UV−vis diffuse reflectance spectroscopy, respectively. Surface photovolta…
Interfacial segregation has long been studied because of its impact on various properties of materials. Usually, theoretical descriptions are based on thermodynamic terms such as segregation enthalpy and entropy. Comparisons of published papers of different authors reveal fundamental differences in our understanding a…
Electrospinning from concentrated diphenylalanine solutions in a low-boiling-point solvent results in tubes that are chemically identical to self-assembled tubes, but show different morphologies, especially extreme lengths. Electrospinning of tubes offers more possibilities for manipulation, for example, bridging elec…
Collagen type I is an AAB heterotrimer assembled from two alpha1 chains and one alpha2 chain. Missense mutations in either of these chains that substitute a glycine residue in the ubiquitous X-Y-Gly repeat with a bulky amino acid leads to osteogenesis imperfecta (OI) of varying severity. These mutations have been stud…
Abstract The swelling of microcrystalline, native and mercerized cotton and eucalyptus celluloses by 16 aprotic solvents was investigated. The number of moles of solvent/anhydroglucose unit, nSw, correlates well with solvent molar volume, basicity and dipolarity/polarizability. Swelling is sensitive to cellulose cryst…
We report experimental results that demonstrate transmission of a microwave image by means of an array of parallel metallic rods over a distance that is 3.5 times greater than the wavelength. The resolution of such an imaging device is 15 times less than the wavelength. The magnifying, demagnifying, and repeating prop…
Thin films of the double perovskite ${\mathrm{La}}_{2}\mathrm{Ni}\mathrm{Mn}{\mathrm{O}}_{6}$ (LNMO) have been grown on various lattice-matched substrates ($\mathrm{Sr}\mathrm{Ti}{\mathrm{O}}_{3}$, $\mathrm{La}\mathrm{Al}{\mathrm{O}}_{3}$, $\mathrm{Nd}\mathrm{Ga}{\mathrm{O}}_{3}$, and MgO) by pulsed laser deposition u…
The effect of relative humidity on the morphology of electrospun fibers of poly(vinyl alcohol), poly(methyl methacrylate), poly(vinyl chloride), polystyrene, and poly(lactic acid) dissolved in solvents such as toluene, N,N-dimethylformamide, 2,2,2-trifluoroethanol, and deionized water was studied by scanning electron…
The study of $(1\ensuremath{-}x){\text{PbMg}}_{1/3}{\text{Nb}}_{2/3}{\text{O}}_{3}\text{\ensuremath{-}}x{\text{PbTiO}}_{3}$ (PMN-PT) single crystals where $x$ is 0, 0.09, 0.21, 0.28, 0.32, 0.35, and 0.38 was carried out with the use of x-ray, dielectric, and Raman scattering techniques in a wide temperature range. In…