Materials Literature
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Abstract A 50‐GHz electric field tunable ferrite‐piezoelectric phase shifter based on a bilayer of single crystal M‐type hexagonal barium ferrite (BaM) and lead zirconate titanate (PZT) is discussed.A dc voltage applied to PZT results in a piezoelectric strain that manifests as an anisotropy field in BaM. A change in…
Abstract Die Schaffung neuer multifunktionaler Materialien mit hierarchischer Ordnung ist ein Schwerpunkt der aktuellen Material‐ und Ingenieurswissenschaften. Ideale Ansatzpunkte für diese Bestrebungen sind Luft‐Flüssigkeit‐Grenzflächen und Grenzflächen zwischen zwei Flüssigkeiten, an denen sich Nanopartikel oder kol…
The micellization behavior of hybrid dendritic-star copolymers with solvophilic dendritic units is studied by means of Brownian dynamics simulations. The critical micelle concentration and the micelle size and shape are examined for different solvophobic/solvophilic ratios r as a function of the number of the dendriti…
We applied a Monte Carlo simulation in Geant4 in order to calculate the absorbed fractions for monoenergetic electrons in the energy interval between 10 keV and 2 MeV, uniformly distributed in ellipsoids made from soft tissue. For each volume, we simulated a spherical shape, four oblate and four prolate ellipsoids, an…
Self-assembly and reassembly of high aspect ratio nanowires of trigeminal porphyrins and their manipulation using an atomic force microscope (AFM) is reported.
This paper focuses on the properties of nanoporous SiOCH thin films deposited using a porogen approach by plasma enhanced chemical vapor deposition. The impact of deposition temperature, porogen loading and porogen removal treatment is investigated using Fourier transform infrared spectroscopy, solid-state nuclear mag…
A new kind of visible-blind organic thin-film material, consisting of a polymeric matrix with a high concentration of embedded 3-hydroxyflavone (3HF) dye molecules, that absorbs UV light and emits green light is presented. The thin films can be grown on sensitive substrates, including flexible polymers and paper. Thei…
The electric transport properties of nanoparticulate zinc oxide (ZnO) thin films are investigated in nitrogen and ambient atmosphere with respect to the effects of polymer adsorbates, in order to study the origin of hysteresis behavior of ZnO thin film transistors. A strong dependence on the polymer adsorbate of the c…
We have prepared CoFe2O4 nanoparticles in micellar medium by wet chemical technique and obtained very high coercivity value of 4.4 kOe at room temperature for particle size ∼16 nm. A large coercivity (∼20 kOe) is observed on cooling down to 2.5 K. We annealed the sample at different temperatures to check the role of m…
A simple route for the fabrication of dichroic optical structures based on Ag nanoparticles deposited onto SiO2 nanocolumns is presented. The strict control of the optical response is achieved after infrared laser treatment of the supported nanoparticles with a commercial nanosecond pulsed laser. Preliminary examples…
It is significantly important to integrate various sources of knowledge and \ninformation for selecting and combining materials in today’s industrial \ndesign practice and education. Compared to the engineering and technical \nproperties of materials, the information about the aesthetic attributes \nan…
The total momentum transfer from fast electron beams, like those employed in scanning transmission electron microscopy (STEM), to plasmonic nanoparticles is calculated. The momentum transfer is obtained by integrating the electromagnetic forces acting on the particles over time. Numerical results for single and dimer…
The oxidation state of Mn in cubic SrMnO(3) and orthorhombic SrMnO(2.5) was investigated by electron energy loss (EEL) spectroscopy. Change in the oxidation state of Mn produced some spectral changes in the O-K edge as well as in the Mn-L(2,3) edge EEL spectra. This study demonstrated that the oxidation state of Mn an…
We introduce here a simple approach in which a cyclodextrin, functionalized with thiols in the narrower rim, is assembled onto the silver surface of a SERS platform composed of polystyrene beads coated with silver nanoparticles. Trapping properties of the fabricated sensor are demonstrated through the retention of dif…
Space charge in polyethylene-based insulation materials and its effect on the local electric field under a dc environment have been extensively examined over the last few decades while the behavior of space charge under ac stress has received less attention. Space charge phenomenon under ac electric fields becomes an…
A wet chemical route for the preparation of MnO(2) nanosheet/Au nanoparticle/MWNT hybrid materials is developed. The Au nanoparticles are prepared by reducing AuCl(4)(-) with citrate and attached to thiol-modified MWNTs. Owing to the reducing property and the binding ability to Mn-containing species of capping agents…
In present work, lead-free single crystal 0.94Na1/2Bi1/2TiO3–0.06BaTiO3 (NBBT94/6) with dimension of Φ40 mm×10 mm was grown by a precisely controlled top seeded solution growth method. The crystal structure measurement result indicates that the NBBT94/6 single crystal exhibits the feature of rhombohedral-tetragonal ph…
The giant polyaluminum species [Al32O8(OH)60(H2O)28(SO4)2](16+) (S-Al32) and [Al13O4(OH)25(H2O)10(SO4)](4+) (S-K-Al13) [S means that sulfate ions take part in coordination of the aluminum polycation; K represents the Keggin structure] were obtained in the structures of [Al32O8(OH)60(H2O)28(SO4)2][SO4]7[Cl]2·30H2O and…
Three different birchwood-based xylan biomaterials were used in the current study to deconvolve the heretofore unknown effects of these modified adsorbed xylans on the processability of eucalyptus pulp: a 4- O -methylglucuronic acid xylan (MeGlcA-xylan); then, the MeGlc moiety was modified to provide an enriched hexen…
Two forms of the solid byproduct from the use of hydroxyalkyl hexahydrotriazine as a hydrogen sulfide scavenger were investigated. The crystalline monomeric dithiazine and the intractable solid, known formerly as amorphous dithiazine. It was implied that the latter was simply another solid form of the same chemical sp…