Materials Literature
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Extended x-ray absorption fine structure investigations are reported concerning the thermal expansion behavior of silver in a wide range of temperatures from 10 to about 950 K as measured in the transmission mode. Models based on the quantum and classical thermodynamic perturbation theory are used to interpret the exp…
The hydraulic performance of pipelines can be significantly affected by the presence of biological growth on internal surfaces. The change in wall roughness brought about by the biofilms has been studied by the use of headloss tests, precleaning and postcleaning of the pipelines in three Tasmanian hydroelectric scheme…
Poly(hydroxyalkanoate)s (PHAs) have attracted much attention as environmentally compatible polymeric materials that can be produced from renewable carbon resources. Biodegradation of PHA materials occurs by the function of extracellular PHA depolymerase secreted from microorganisms. Thus, elucidation of the enzymatic…
Abstract We have established a possibility to obtain the photoinduced optical second harmonic generation in the initially centrosymmetric single crystals of tris(thiourea)copper(I) perchlorate crystallized in the monoclinic system with the space group P 2 1 / c . The second‐order susceptibility of the investigated cry…
We succeeded in providing for the first time the evidence of the NanoBud structure (fullerenes attached to the surface of SWCNT) by Raman spectroscopy in combination with TEM. This work was performed on the individual freestanding NanoBud structure. The Raman features corresponding to the typical vibrational modes of…
This review describes the characterization and application of poly(hydroxyalkanoates), PHAs, a remarkable family of natural polyesters with a wide array of useful properties and potential applications. It places specific emphasis on the work of Robert H. Marchessault and his many colleagues outlining how Marchessault’…
A comparative study of the effect of O+7ion beam on polypyrrole and CR-39 (DOP) polymers, Ramola, R C, Chandra, Subhash, Rana, J M S, Sonkawade, R G, Kulriya, P K, Singh, Fouran, Avasthi, D K, Annapoorni, S
A bifunctional substituted dithienylcyclopentene photochromic switch bearing electropolymerisable methoxystyryl units, which enable immobilization of the photochromic unit on conducting substrates, is reported. The spectroscopic, electrochemical, and photochemical properties of a monomer in solution are compared with…
Cu 2 S nanocrystals and superlattices were synthesized by a simple solution-phase thermolysis of the copper dodecanethiolate polymer precursor. X-ray diffraction (XRD), selected area electron diffraction (SAED), and high resolution transmission electron microscopy (HRTEM) confirmed the chalcocite crystal structure of…
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…