Materials Literature
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Substitutional B and N doping is a powerful way to modulate the electronic properties of carbon π-conjugated materials. However, the B and N dopants in all the previously reported hybrid materials have either doubly filled or empty p z orbitals, causing large reductions of carrier mobilities for the materials. Using d…
A summary is described about nuclear power reactors analyses and simulations in the last decades with emphasis in recent developments for full 3D reactor core simulations using highly advanced computing techniques. The development of the computer code AZKIND is presented as a practical exercise. AZKIND is based on mul…
Highly porous materials like aerated concrete with entrained air content more than 45 % is nevertheless damaged during freezing. This should be attributed to its pore structure and degree of saturation rather than its low strength. This paper develops the concept of the critical saturation to which a microstructural e…
This review includes the results of investigations of the electrical, photoelectrical, optical, and luminescent properties of undoped single crystals of ZnO grown by the gas-cycle method. It is shown that the high conductivity of ZnO is caused by interstitial Zn atoms (Zni) that are shallow donors and are mobile at ro…
In this paper, we report a unique monolithic integrated arrayed-waveguide grating that can act as both multiplexer and demultiplexer with an all-metal rod for compensating. There are almost the same inspectrum profiles observed either the original chip or the athermalization one. A Flat-top athermal AWG modules of 100…
We report, for the first time, metal (Pd) nanocrystals (NCs) covered with a 2D flexible metal–organic framework (MOF) of [Zn(NO2-ip)(bpy)]n (NO2-ip: 5-nitro-isophthalate, bpy: 4,4′-bipyridine). The hybrid materials were characterized by powder X-ray diffraction measurements and transmission electron microscope techniq…
Oxidation during coating deposition by means of thermal spraying is a widely investigated and discussed topic. Most of the studies dealing with this subject report negative influences of oxidation on the coating properties, especially with respect to corrosion behavior. On the other hand, positive effects are reported…
The dynamics of entangled polymer melts not only is of fundamental theoretical interest but also has wide-reaching consequences for developing a theoretical foundation for investigating biological macromolecules and complex systems relevant to material sciences. Despite several decades of intensive experimental and th…
In this work some mechanical properties of epoxy resin (DGEBA)/silica oxide (SiO2) reinforced with different weight percentage (5, 10 and 15) fiberglass investigated. A homogeneous solid colorless samples were prepared at room temperature using disposable stirrer. The study used the comparison of fiberglass different…
Phthalic anhydride is one of the compromise coupling agents that enhance the dispersion and hydrophobicity of fiber which consequently improved the interfacial adhesion of composites. This article is concerned with the mechanical properties, morphology, and functional groups towards recycled high density polyethylene…
We report on the observation of coherent terahertz (THz) emission from the quasi-one-dimensional charge-density wave (CDW) system, blue bronze (K 0.3 MoO 3 ), upon photo-excitation with ultrashort near-infrared optical pulses. The emission contains a broadband, low-frequency component due to the photo-Dember effect, w…
The fundamental and first overtone transition frequencies of local OH bonds of the hydrogen bond donor molecule in a water dimer were calculated by numerically solving one‐dimensional Schrödinger equation with anharmonic potential energies obtained by ab initio quantum chemical methods at the near basis set limit. Amo…
The effects of deposition conditions on the material properties of CdS thin films grown by chemical bath deposition (CBD) were studied. The growth conditions include stirring rates and the number of substrates used during deposition. Material properties such as the structural and morphological characteristics were inv…
ZnO nanowires (NWs), with 200nm diameter, are synthesized by a hydrothermal method and in situ grown on the surface of a micro-sensor for detecting trace H2S gas. A chemical conversion of ZnO to ZnS is adapted to create a ZnS shell over single crystalline ZnO nanowires. The morphology and composition of both ZnO nanow…
Metabotropic glutamate type 7 (mGlu 7 ) receptor is a member of the group III family of mGlu receptors.
Solid-state nuclear magnetic resonance (NMR) spectroscopy is used to study heavily Yb 3+ and Er 3+ doped, fluorescent NaY 1– x – y Yb x Er y F 4 nanoparticles. An understanding of the 19 F wide line NMR response suggests that the 0 ppm portion of the 19 F NMR spectrum can be used as a probe of trivalent lanthanide con…
This paper presents the results of a corrosion investigation on rebar embedded in concrete slabs which are exposed to sea water for more than 4 years. Corrosion potentials and polarization resistances were measured on the rebar. The w/c ratio varied between 0,40–0,75. Some of the slabs were prepared with cracks, 0,2–0…
This study describes a methodological proposal to select composite materials which are suitable to be employed to manufacture pipes that can properly withstand environments subjected to gamma and neutronic radiation. The methodology is used to select, among many others, the optimal composite material whose properties…
Multifunctional nanoparticles with a core/shell structure of Fe3O4/mSiO2/ZrO2 were prepared using two-step solution processes. First, magnetite (Fe3O4) core nanoparticles were prepared using the solvothermal method, then SiO2 and ZrO2 shell layers were coated on nanoparticles using a modified sol-gel method. The avera…
Blow fill seal (BFS) involves the manufacture and filling of plastic containers in one continuous operation. This chapter focuses on the fundamentals of operation and a discussion of basic validation techniques and approaches. In the mid-1960s, BFS technology was developed as an attempt to shorten long bottle-formatio…