Materials Literature
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The paper deals with results of research aimed at the problem of the maximum possible amount of added sawdust to standard particles into surface and central layers of three-layer particleboards in order that the physical and mechanical properties of particleboards will comply with the CSN 49 2614 Standard. Waste from…
Solvent free emeraldine base/epoxy resin coating was prepared employing liquid aliphatic polyamine as the "solvent" for emeraldine base(EB) as well as the "hardener" for epoxy resin(EPR). EB/EPR Coatings with EB loading of 1-2wt% showed good corrosion prevention on mild steel either in 0.1 M HCl solution or in 3.5wt%…
The development of phase change optical recording requires better understanding of the crystallization kinetics of recording materials. Most of the existing simulation methods are based on two-dimensional crystallization models. In this work, we develop a new method to simulate the crystallization of phase change reco…
A mark simulation tool for fast-growth phase-change materials was developed to predict the formation and erasure of amorphous marks in phase-change discs that are based on doped Sb 2 Te compositions. One of the main challenges of such a simulation tool is the accurate determination of the input parameters. The thermal…
Ice IV was prepared in a reproducible manner on heating high-density amorphous ice (HDA) at pressure of 0.81 GPa up to ≈162 K at a slow rate of ≈0.5 K min -1, quenching thereafter to 77 K, and recovering the sample under liquid N 2 at 1 bar. Recovered ice IV was characterized by X-ray diffraction and it was free of HD…
Abstract The correlation between the modulus of elasticity, on the one side, and Vickers microhardness and total microhardness, on the other side, was analyzed in the case of ultrahigh molecular weight polyethylenes. An extension of the application of the power relation between microhardness and the modulus ( MH = aE…
We have probed the temperature and magnetic-field dependence of the thermopower and resistance of a p-type silver chalcogenide, Ag2−δTe. The application of a magnetic field causes not only a large magnetoresistance but also a giant magnetothermopower effect. The maximum change of thermopower is as high as 470 μV/K in…
The thermomechanical stability of a system composed of a metallic cap layer on top of a low-k thermosetting polymer film is investigated. It is observed that, when metal layers with high compressive stresses are used, a stress relaxation takes place during thermal anneal at temperatures above 300 °C through buckling o…
(Ge 2 Sb 2 Te 5 ) 100- X Ag X films (where x =0∼3 at.%) with 100 nm thickness were deposited on natural-oxidized silicon wafer and glass substrates by dc magnetron co-sputtering of Ge 2 Sb 2 Te 5 and Ag targets. The effects of Ag content on the optical properties of the (Ge 2 Sb 2 Te 5 ) 100- X Ag X film were examined…
An introduction to the chemistry and corrosion properties of electroactive polymers (EAPs) will be presented. This chapter will focus on both the synthesis of several classes of EAPs and the processes by which the insulating form is converted to the conducting form. The book chapter will present a compelling argument…
Lyotropic liquid crystals formed by cholesteryl oligo(ethylene oxide) amphiphiles were used to template the II−VI semiconductor cadmium sulfide. The amphiphiles were synthesized with average chain lengths ranging from 5 to 30 repeats of ethylene oxide and characterized by polarized optical microscopy, differential sca…
Direct visualization of IPN morphology formed during polymerization-induced phase separation (PIPS) of PDMS−PMAA IPNs is reported. Laser scanning confocal microscopy (LSCM) and hydrophilic fluorescent probes of varying molecular weights were used to image hydrophilic domains in PDMS−PMAA IPNs. The images reveal comple…
An antibody that binds rare earth complexes selectively could be used as a docking station for a set of probe molecules, of particular interest for medical imaging and therapy. The rare earths are rich in probe properties, such as the paramagnetism of Gd, the luminescence of Tb and Eu, and the nuclear properties of Lu…
Optical phase gratings have been prepared in a photo-cross-linkable polymer liquid crystal substituted with a 4-methoxycinnamoyloxybiphenyl side group by the use of linearly polarized ultraviolet interference light and subsequent annealing. The diffraction was almost invisible after irradiation, and was successfully e…
We have developed an inorganic write-once disc based of the Blu-ray disc format. Our write-once disc has a double layer recording stack of a Cu alloy layer and a Si layer. These materials are environmentally friendly and low in cost. We designed a new write pulse strategy for high-speed recording while maintaining low…
We report a novel assembly approach for fabrication of molybdenum trioxide nanoplatelets with precise controls of stack architecture and crystallographic phase (either β-MoO 3 or α-MoO 3, or their mixture) at 300−450 °C. The self-assembly of these metal oxides occurs within a predefined space of original hybrid single…
We screened bright blue phosphor materials for a ZnO–WO3 binary system. The film was deposited by combinatorial pulsed laser deposition at room temperature and then annealed. The film composition changes continuously in a full-range from ZnO to WO3 on a single substrate. We obtained two results from the distribution o…
An optically transparent hexagonal mesostructured tin oxide film with a microcrystalline framework was prepared by combining dipcoating and a subsequent treatment with water vapor. After a substrate was coated with an alcoholic precursor solution containing tin tetrachloride and nonionic surfactant, the substrate was…
Ba 0.6 Sr 0.4 TiO 3 thin films were grown on MgO(001) substrates using pulsed-laser deposition. The films were highly oriented along the (001) direction, and showed a high electro-optic response to an external electric field. The quadratic electro-optic coefficient Rc was 1.0×10−14 m2/V2, and the birefringence variati…
We study the phase behavior of hard rods with length polydispersity, within a simplified Onsager model. We focus on unusual effects occurring when the rod length distribution has a “fat” (e.g., log-normal) tail, up to some cutoff. The relatively large number of long rods in the system has strong effects: the isotropic…