Materials Literature
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The roles of poly(lactic acid) chain conformation and configuration on the enthalpy relaxation kinetics of amorphous poly(lactic acid) were examined. Enthalpic relaxation data, which were scaled to the same supercooling from the initial fictive temperature, were taken for three types of the polymer containing various…
Epitaxial (001)-oriented (1- x )BiFeO 3 – x BiCoO 3 solid solution films with x = 0–0.33 were grown on (100)SrTiO 3 substrates at 700 °C by metalorganic chemical vapor deposition. The crystal structure of the films was characterized by high-resolution X-ray diffraction analysis and Raman spectroscopy. Unit cell volume…
The influence of fission product doping on the structure, composition, and electrochemical reactivity of uranium dioxide has been studied using X-ray diffractometry (XRD), scanning electron microscopy (SEM/EDX), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). Experiments were conducted on SIMFUEL speci…
A novel strategy for the large scale, continuous production of aligned carbon nanotube arrays using millimeter‐diameter spheres as growth substrates is reported (see figure and cover). The present technique is more productive than the conventional process on flat wafers because of the higher available growth surface a…
The stress induced migration of planar grain boundaries in aluminium bicrystals was measured. Symmetrical <100> tilt grain boundaries with misorientation angles in the range between 5.7° and 17.8° were examined. Boundary migration under a shear stress was observed to be ideally coupled to the lateral translation…
In the absence of scientific clarity about the potential health effects of occupational exposure to nanoparticles, a need exists for guidance in decision making about hazards, risks, and controls. An identification of the ethical issues involved may be useful to decision makers, particularly employers, workers, invest…
Abstract Plasma electrolytic oxidation (PEO) of Mg‐based AZ91D alloys was investigated using 50 Hz AC anodizing technique in an alkaline borate solution, which contained a new kind of organic additive and without F, P, and Cr. The anodizing technological parameters have been optimized and a kind of ivory‐white smooth…
Pyroelectric conversion utilizes low-grade waste heat as a heat source, and thus produces clean energy. Low-grade heat is abundant in the various industries and it is practically free. It can be converted to high-voltage electricity by pyroelectric conversion. Our pyroelectric converter uses copolymer of poly-vinylide…
ZnO/Eu mixed films have been prepared by electrochemical precipitation at an electrode surface. The films present a composite nanostructure with rod-shaped columns of Eu 3+ -doped ZnO surrounded by a Eu/ZnO mixed basal layer. The fraction of basal layer increases rapidly with europium concentration in the deposition b…
Under the guidance of the calculation of phase diagrams method, the self-organized Cu alloy/stainless steel composite powders with a core/shell microstructure were developed based on the gas atomization process, and the formation evolution of self-organized core/shell structure composite powders was modeled by the pha…
We have fabricated batteries using a random network of carbon nanotubes serving both as the charge collector and the interface with the active components. Due to the high network conductivity and high porosity, such networks, in combination with nanoscale active components, lead to batteries with excellent energy stor…
The use of polycrystalline ceramics in engineering applications requires a better knowledge of microstructural response than exists at present. The continuum response of the alumina AD995 to shock loading has been extensively investigated. This work aims to connect microstructural response with continuum observations.…
The growth of single-walled carbon nanotubes (SWCNTs) in plasma-enhanced chemical vapor deposition (PECVD) is studied using a surface diffusion model. It is shown that at low substrate temperatures (⩽1000K), the atomic hydrogen and ion fluxes from the plasma can strongly affect nanotube growth. The ion-induced hydroca…
Abstract Human osteoblasts (SAOS‐2) are cultured on single‐walled carbon nanotube (SWCNT) and nanocrystalline diamond (NCD) films in order to evaluate their potential for biological application. We present dependence of metabolic activity and morphology of osteoblasts on (i) material substrate (NCD or SWCNT films), (i…
The typical parts of a polymeric insulator are core, metal end fittings and polymeric housing material. The housing is intended to protect the fibre glass rod from the environment and electrical surface discharges. Since the housing materials are made of organic polymeric material, its insulation characteristics need…
It has been known that barium titanate (BaTiO 3 ) causes abnormal grain growth during conventional sintering utilizing resistance heating. The grain growth of barium titanate induced using by a hydrothermal synthesis method is controlled using microwave sintering having effects on internal overheating and rapid sinter…
A hot wire probe has been developed for use inside a transmission electron microscope to measure the thermal resistance of individual nanowires, nanotubes, and their contacts. No microfabrication is involved. The probe is made from a platinum Wollaston wire and is pretensioned to minimize the effects of thermal expans…
Evaluation of: Gobin AM, Lee MH, Halas NJ, James WD, Drezek RA, West JL: Near-infrared resonant nanoshells for combined optical imaging and photothermal cancer therapy. Nano Lett. 7, 1929–1934 (2007) [1]. Although hyperthermia has been a promising method of cancer treatment for decades, traditional means of heating ti…
A 1:1 adduct of phenazine (Phz) with chloranilic acid (H 2 ca) and bromanilic acid (H 2 ba), in which nonpolar neutral molecules are connected by the intermolecular O−H···N hydrogen bonds, shows ferroelectric transitions. Neutron diffraction analysis of these materials reveals that there are two inequivalent hydrogen-…
Markov chain Monte Carlo (MCMC) is the most widely used method of estimating joint posterior distributions in Bayesian analysis. The idea of MCMC is to iteratively produce parameter values that are representative samples from the joint posterior. Unlike frequentist analysis where iterative model fitting routines are m…