Materials Literature
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Electrochromic nickel oxide films were deposited by radio-frequency magnetron sputtering of a Ni target in gas mixtures of Ar and O2. When electrochemically cycled in 0.1 N KOH solution, large reversible changes in visible absorption were obtained within the first 10 bleach/color cycles. Films which showed the greates…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystallization kinetics in the mixtures of poly(vinylidene fluoride) and poly(methyl methacrylate): two-step diffusion mechanismHiromu Saito, Tetsuo Okada, Toshihiko Hamane, and Takashi InoueCite this: Macromolecules 1991, 24, 15, 4446–4449Publication Date (Print):July 1, 1…
Ribbons were annealed in the demagnetized state with one wall along the ribbon middle. This wall becomes pinned during the heat treatment. Reentrant reversal occurs when reverse domains are nucleated at the ribbon edge with a threshold field larger than the demagnetizing field; this wall does not annihilate when it me…
Smectic-A nucleating in the isotropic phase presents various bulk focal conic defects close to the interface, within the “bâtonnets” first described by Friedel and Grandjean in 1910. We experimentally study the stability of the “bâtonnets” in a high-frequency aligning electrical field. Although the external shape appe…
The interactions of bacteria isolated from corroded copper coupons on thin films of copper evaporated onto germanium internal reflection elements were evaluated nondestructively in real time by attentuated total reflectance Fourier transform infrared spectroscopy. The films were stable in the presence of flowing or st…
Abstract Thermoplastic elastomers based on blends of polyolefins are an important family of engineering materials. Their importance arises from a combination of rubbery properties along with their thermoplastic nature in contrast to thermoset elastomers. The development of polyolefin thermoplastic elastomer blends fol…
Abstract Compounds having structural units formed by transition metals and hydrogen have only become known fairly recently. Only the synthesis and structural characterization of ternary metal hydrides A x M y H z in which A is an alkali or alkaline‐earth metal and M is a transition metal, led to the discovery of anion…
We extend previous work on the Khokhlov-Semenov approach to long-range order in solutions of persistent flexible main-chain polymers by including hexagonal columnar ordering. The description of long-range positional order uses a recent model developed for rigid rodlike particles, which is based on the tradeoff of tran…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDesign and synthesis of new ferroelectric liquid crystals. 14. An approach to the stereocontrolled synthesis of polar organic thin films for nonlinear optical applicationsDavid M. Walba, M. Blanca Ros, Noel A. Clark, Renfan Shao, Michael G. Robinson, Jian Yu Liu, Kristina M.…
Boron-doped diamond epitaxial films were characterized on the dependence of boron concentration by an optical microscope, reflection high-energy electron diffraction, secondary ion mass spectrometry, Hall effect measurement and metal contacts. These films were grown on synthesized single-crystal diamonds(100) by micro…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTheoretical and experimental study of diamagnetic and paramagnetic products from thermal and light-induced alkyl transfer between zinc or magnesium dialkyls and 1,4-diaza-1,3-butadiene substratesMartin Kaupp, Hermann Stoll, Heinzwerner Preuss, Wolfgang Kaim, Thomas Stahl, Ge…
It is shown that UV-excited porous Si (PS) exhibits an efficient visible photoluminescence (PL) at room temperature. The PS layers were formed by anodization of p-type and n-type single-crystal Si wafers in aqueous HF solutions. The peak wavelength of PL spectra depends on the anodization parameters including the resi…
For 45 years, the Bulgarian uranium industry operated behind an impenetrable veil of secrecy. As this veil is slowly lifted, the breadth and structure of the industry are becoming apparent-and so are the problems. Bulgaria`s uranium industry began in 1945 with the evaluation of several uranium mineral occurrences in t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTControlled cooling crystallization of ammonium sulfate in the ternary system ammonium sulfate-ammonium nitrate-waterCheong Song Choi and Ik Soo KimCite this: Ind. Eng. Chem. Res. 1991, 30, 7, 1588–1593Publication Date (Print):July 1, 1991Publication History Published online1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrolysis of poly(dichlorophosphazene)Douglas G. Gabler and James F. HawCite this: Macromolecules 1991, 24, 14, 4218–4220Publication Date (Print):July 1, 1991Publication History Published online1 May 2002Published inissue 1 July 1991https://pubs.acs.org/doi/10.1021/ma00014a…
Abstract The effects of phase separation temperature and time on the tensile, dynamic mechanical, and tear properties of blends of polystyrene and poly(vinyl methyl ether) were investigated after phase separation above their respective cloud points with specified temperature‐annealing time protocols. The results are a…
We conducted an analysis of leukemia mortality and protracted exposure to low-dose ionizing radiation. We used data from seven published epidemiologic studies of nuclear workers that reported individual monitoring information for radiation exposure. We found 83 leukemia deaths among white males from a combined total o…
The BN solubilities for B 2 O 3 , B 2 O 3 ─SiO 2 , and B 2 O 3 ─CaO systems have been measured mainly at 1823 K using a graphite crucible. The capability of the systems for nitrogen dissolution is compared with that of silicate systems in terms of nitride capacity. The dependence of nitrogen solubility in molten CaO c…
A new analysis is presented to describe the weak linear temperature dependence of the stress observed from 293 to 550 K in B-doped silicon membranes supported by silicon substrates. In contrast to a previous treatment, where consideration was given only to the existence of a differential thermal expansion coefficient…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProcedure for predicting lower critical solution temperature behavior in binary blends of polymersP. A. Rodgers, D. R. Paul, and J. W. BarlowCite this: Macromolecules 1991, 24, 14, 4101–4109Publication Date (Print):July 1, 1991Publication History Published online1 May 2002Pu…