Materials Literature
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Nano has now become a theme in almost all the established discipline. The confluence of innovative methodologies, sophisticated characterisation techniques, and potential technological utility has resulted in intense research activity in the field of polymer nano composites. Polymer composites made out of nano materia…
Porous alumina masks are fabricated by anodization of aluminum films grown on both semiconducting and insulating substrates. For these self-assembled alumina masks, pore diameters and periodicities within the ranges of 10–130 and 20–200nm, respectively, can be controlled by varying anodization conditions. 20nm periodi…
Ordinary fired Bi4Ti3O12 ceramics show a gradual reduction in their room temperature d33 after annealing at temperatures from room temperature to 450°C. Textured ceramics show a greater resistance to thermal depoling. At about 450°C there is a rapid drop of d33 for the textured materials, which may be a consequence of…
This paper discusses the potential for hydrogen storage in carbon nanostructures through a better understanding at the fundamental molecular level. The use of hydrogen as a fuel is limited in large part because of lack of progress in developing suitable storage and delivery systems. Materials that adsorb significant q…
We consider the electronic properties of empty single-wall nanotubes (SWNT) and SWNT filled with fullerene molecules (carbon “nano-peapods”). The first part of the review (Sec. II) is devoted mostly to the Luttinger liqued properties of individual metallic SWNT coupled to metallic electrodes or to superconducting lead…
New beta‐metastable Ti alloys containing Ta, Mo and Fe biocompatible elements were synthesized by arc melting and then quenched in water from the beta phase field. For each alloy, the beta‐metastable phase decomposition was characterized by electric resistivity measurements and differential scanning calorimetry upon h…
Electron emission and concomitant charge accumulation near the surface of insulators is central to understanding spacecraft charging. A study of changes in electron emission yields as a result of internal charge buildup due to electron dose is presented. Evolution of total, backscattered, and secondary yield results o…
Abstract The present paper reports on the cyclic stress–strain response of body-centered cubic ultrafine-grained (UFG) interstitial-free (IF) steel severely plastically deformed at room temperature utilizing equal channel angular extrusion (ECAE). Low-cycle fatigue tests were conducted with various strain amplitudes a…
In champagne and carbonated beverages, bubble nucleation was mostly found to take place from tiny Taylor-like bubbles trapped inside immersed cellulose fibers stuck on the glass wall. The present paper complements a previous paper about the thorough examination of the bubble nucleation process in a flute poured with c…
New ferroelectrets were developed on the basis of foams from cyclo-olefin polymers and copolymers. The results obtained on the cyclo-olefin polymer foam demonstrate a significant improvement of the service temperature for ferroelectret transducer materials. Suitable compounding and preparation led to cyclo-olefin ferr…
The influence of strain rate in the range of 10 –1 to 10 –5 s –1 on the compression behavior of a cryomilled 5083 Al alloy is studied. The compression flow stress remains constant after an initial short strain hardening and a small stress dip, which indicates a dynamic saturation of dislocations. It is found that the…
Abstract Structural changes occurring in the high temperature region of doubly‐oriented nylon 10/10 sample have been investigated through the temperature‐dependent simultaneous measurements of wide‐angle and small‐angle X‐ray scatterings, and the results were compared with the infrared spectral data as well as the mol…
Blends of low density polyethylene (LDPE) and polyamide-6 (PA6) are produced via blown film extrusion to study the effect of freeze-line position and stretching force on blend morphology. An experimental setup is designed to measure the stretching force as a function of draw ratio (DR) and freeze-line position for 4,…
The Hamiltonian in the Heisenberg model has been solved for oriented ferromagnetic films with N layers. The easy and hard directions of magnetization have been calculated for a ferromagnetic film with a bcc(001) lattice. However, the method explained in this report is applicable to a film with any ferromagnetic materi…
The activation behaviors and hydrogen storage properties of the Laves phase Ti1−xZrx (Mn0.5 Cr0.5)2(x =0, 0.1, 0.2, 0.32, 0.5) alloys were investigated by the pressure-composition-temperature (P-C-T) measurements. All the studied alloys show the single C14-type Laves phase structure based on the XRD data. Except for t…
Based on the reaction products of ethylenediaminetetraacetic acid (EDTA) with 1,2-phenylenediamine (o-PDA), a novel thermal decomposition pathway of EDTA is proposed. The strong acidic medium and the presence of o-PDA facilitate the decomposition of EDTA as evidenced by the relatively lower reaction temperature. In ad…
Visible laser irradiation of AgOx thin films forms Ag nanoparticles, which then results in surface-enhanced Raman scattering (SERS). The efficiency of this Ag nanoparticle formation strongly depends on the properties of the AgOx thin films. Thermal annealing causes changes in physical properties such as deoxidization…
Compositional variation of the lattice parameters of TlBX2-type (B = Ga or In and X = S or Se) mixed crystals with monoclinic structure were studied by X-ray diffraction technique. The lattice anisotropy (c/b) of these mixed crystals changes linearly with substitution of the atoms located both at the centers and the v…
Maleated ethylene-propylene diene monomer rubber (MAH-g-EPDM) was prepared on a two-roll mill and tested as a compatibilizer for EPDM/NBR (butadiene-acrylonitrile rubber) blend. Intrinsic viscosity measurements and scanning electron microscopy revealed that MAH-g-EPDM improved the compatibility and morphology of EPDM/…
Industries including semiconductor, biotechnology, and nanotechnology are seeking compact and reliable nanometer resolution positioning techniques. To address this demand, this article presents a friction-drive rotary stage driven by a piezoelectric transducer (PZT) actuator. This stage includes a multilayer PZT actua…