Materials Literature
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One type of nanoring reflectarray metasurface is demonstrated to achieve high-efficiency beam steering in anomalous reflections. Rings with varied inner radius are designed to manipulate the phase front of the incident wave. The efficiency of anomalous reflections achieves more than 80% at the reflection angle of 53°…
We study the ballistic conductivity of graphene bilayer in the presence of next-nearest neighbor hoppings between the layers. An undoped and unbiased system was found in Ref. [1] to show a nonuniversal (length-dependent) conductivity $\sigma(L)$, approaching the value of $\sigma_\star=3/\pi\simeq{}0.95$ for large $L$.…
The chemical state of ions in different samples of ceramics of the Ba1 − x Sr x TiO3 (x = 0.2) system produced by varying only a single technological parameter (sintering temperature T S) is studied by means of X-ray photoelectron spectroscopy. The X-ray electron spectra of the Ba4d, Sr3d, O1s, and Ti2p levels reveal…
MYTHEN is a single-photon-counting strip detector. Its main features are high spatial resolution, zero noise, fluorescence suppression, fast readout, high dynamic range, radiation-hard and maintenance-free design. Perspectives of such a detector in residual stress measurements involve: (i) Measurements of absorbing/th…
Boron doped MnS lms were obtained by the spray pyrolysis method using the boric acid (H3BO3) as dopant source at a substrate temperature of 350• C. The spray pyrolysis method has a wide range of application areas with a low cost well-suited for the manufacture of solar cells.The properties of boron doped MnS lms were…
Bulk amorphous and nano‐crystalline metallic materials have been observed to possess excellent mechanical and physical properties. The conventional process routes, to synthesize such materials, are restricted by their ability to achieve rapid solidification, which limits the dimensions of the materials produced. In th…
Epoxy resin and mica sheets consist the essential insulation of rotating machine stator bars. Such an insulation, although very resistant to partial discharges, is subjected to considerable electrical stresses and consequently electrical trees may ensue. In this paper, an effort is made to simulate electrical tree pro…
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GC = Glucocorticoid/e HHNR-Achse = Hypothalamus-Hypophysen-Nebennierenrinden-Achse PCP = Pneumocystis jirovecii
The prototyping of products by additive and subtractive technology can vary in: quality, time and costs, depending on the characteristics of the products. The selection of technology often is conditioned the decision of the designer/engineer or operator because of the type of material, size and accuracy. Furthermore,…
The polyurethane (PU) formation reaction of liquid monomers involves a combination of physical and chemical phenomena, promoting the rapid transformation of a liquid mixture of low molecular weight components into an often solid and spongy structure. The kinetics of polymerization of polyurethanes through the reaction…
M J Lagos, A Reyes-Coronado, P M Echenique, J Aizpurua, P E Batson; Attosecond Forces Imposed by Swift Electrons on Nanometer-Sized Metal Particles, Micros
Douglas Stauffer, Sanjit Bhowmick, Ryan Major, Oden L Warren, S A Syed Asif; High Plastic Strain of Silica Microparticles under Electron Beam Irradiation,
This paper presents an on-chip thermoelectric (TE) energy management system for energy-efficient on-demand active cooling of integrated circuits. Embedding a TE module (TEM) within the package has shown potential for on-demand cooling of integrated circuits (ICs); however, the additional cooling energy limits the effe…
Anodic aluminum oxide doped with vanadyl citrate chelate complex anions was formed by a two-step self-organized anodization in 2 wt. % sulfuric acid containing 0.04 M V2O5 and 0.08 M citric acid at voltage range 13-23 V, and at 0 and 15 oC. The combination of two temperatures and at least four voltages (depending on t…
Inspired by the compound eyes of the green bottlefly, superhydrophobic and anti-fogging inorganic nanostructures are fabricated by K. Liu, J.-H. Kim, and colleagues on page 3001. The resultant surface structures can be regulated through the modulation of experimental parameters, demonstrating different wetting behavio…
Radiation characteristics of a wide-band dipole antenna over an electromagnetic band-gap (EBG) reflector are investigated. The mushroom-like EBG structure is used as the EBG reflector. The analysis is performed using Method of Moment. It is shown that wideband characteristics of the voltage standing wave ratio (VSWR)…
The optical properties of sol-gel spin-coated ZnO and F-doped ZnO (FZO) thin films were investigated using ultraviolet-visible and temperature-dependent photoluminescence spectroscopies. The FZO films showed on average of > 80% optical transmittance over the entire visible region, and the transmittance spectra and the…
Lead-free KNbO3single crystals and (K0.38Na0.52Li0.04)-(Nb0.86Ta0.1Sb0.04)O2.97textured ceramics were investigated as a function of temperature using Raman spectroscopy and loading dilatometry.
Magnesium single crystals of three dierent orientations were deformed by tension at room temperature to investigate the geometrical criterion resulting from the Schmid law for activation of basal and non-basal slip systems. Changes of crystallographic orientations of investigated single crystals were systematically me…