Materials Literature
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We present simulation results of the indium tin oxide (ITO) top diffraction grating using a rigorous couple wave analysis (RCWA) for GaN LEDs. We study three different nano-structure patterns: cylindrical pillar grating, conical pillar grating, and cylindrical nano-hole grating. We show the light transmission improvem…
We report the novel use of organically modified silica (ORMOSIL) nanoparticles to encapsulate hydrophobic quantum dots (QDs), thus making them hydrophilic and yet maintaining stable optical properties. QDs are resistant to photobleaching, and the cationic charge on the surfaces of the ORMOSIL nanoparticles can facilit…
There are some troubles in postharvest plants. It is especially caused by fungi or microorganism that grows in that plant. The problem that appears caused by fungi and microorganism is the decrease of quality and quantity of harvest plant which is produced. One of the solutions of this problem now is by using pesticid…
Ageing phenomena in the martensitic phase β1 ' (18R) of Cu-based shape memory alloys (SMAs) are rather slow. However, the modification in the charecteristics of the tansformation on heating and cooling after ageing in the β1 austenite phase isn’t complex. The influences of the ageing at a temperature above Af (austeni…
The paper presents a linear model of ferroresonant circuit with flux reflection. The proposed model—flux reflection model—derives from observations of typical flux waveforms of nonlinear coil during ferroresonant steady states. Simulation results of the flux reflection model are compared with simulation results of the…
An experimental study of nitric oxide removal by selective noncatalytic reduction (SNCR) using ammonia as reducing agent has been performed in a semi-industrial reactor over the temperature range 973−1200 K. Several chemical compounds, such as CH4, C2H4, C2H6, CH3OH, C2H5OH, and CO, which are usually used in the liter…
We apply the atom-atom potentials to molecular crystals of iron(II) complexes with bulky organic ligands. The crystals under study are formed by low-spin or high-spin molecules of Fe(phen)(2)(NCS)(2) (phen = 1,10-phenanthroline), Fe(btz)(2)(NCS)(2) (btz = 5,5',6,6'-tetrahydro-4H,4'H-2,2'-bi-1,3-thiazine), and Fe(bpz)(…
This study is concerned with the characterization of oxide layers formed on Ni-free stainless-steel and the immobilization of a silane coupling agent, i.e. γ-aminopropyltriethoxysilane (APS). The Ni-free stainless-steel was oxidized at three different temperatures, 800 K, 1000 K and 1200 K in air, and then the APS mol…
We show in this report an easy and efficient method of purifying single-wall carbon nanohorns (SWNHs). The major impurities of SWNHs are micrometer-order graphite-based particles, named giant graphite (GG) balls, the content of which is within 5–15 wt %. GG balls cannot be removed by combustion because they are burned…
The electrochemical behavior of alfa brass (Cu3Zn) was studied using electrochemical and surface characterization techniques in an acidic noncomplexing medium. The alloy was prepared from pure Zn and Cu to eliminate the dezincification inhibitors and was properly heat-treated. Below a transition potential [ standard h…
To demonstrate the effect of mechanochemical processing on solid-state recrystallization, four inorganic salts of NaCl, KCl, NaBr and KBr were selected on the basis of a literature survey and crystallographic data, and their binary mixtures were ground with a planetary ball mill. X-ray powder diffraction patterns of t…
New 4-alkoxynitrochalcones have been synthesized and shown to be organogelators; dodecyloxy/benzyl alcohol gels have been studied by freeze-fracture electron microscopy, DSC and FTIR. We show that the nitro group is involved in the formation of the gel and that the gelator co-assembles with solvent molecules.
An infrastructure of new and existing pipelines and systems will be required to carry and to deliver hydrogen as an alternative energy source to meet the energy demands of the future. Carbon and low alloy steels of moderate strength are currently used in hydrogen delivery systems as well as in the existing natural gas…
The synthesis, X-ray crystal and electronic band structures as well as magnetotransport and magnetic properties of the α-(BEDT-TTF)2[Mn2Cl5(H2O)5] radical cation salt with a new type of magnetic polymeric complex anion, [Mn2Cl5(H2O)5]−∞, are reported. The crystal structure is characterized by radical cation layers alt…
Abstract The electrical ( σ ) and thermal conductivity ( λ ) of Al 76 Co 22 Ni 2 decagonal approximant has been measured along three orthogonal directions a * , b and c of the Al 76 Co 22 Ni 2 unit cell, where ( a , c ) monoclinic atomic planes are stacked along the perpendicular b direction. Electrical conductivity i…
Wettability tests were performed for Cu, Ag, Au liquid drops on diamond substrates as well as measurements of mechanical contact strength (MCS) between solidified metal drops and diamond. The work of adhesion was calculated using data for metal surface tension and observed contact angles. Cu, Ag, Au (metals of the gro…
A novel apatite-type compound, (Na2.5Bi2.5)(PO4)3(F,OH), NBPF, in the form of single-crystal microtubes with well-faceted, hexagonal morphologies in both exterior and interior surfaces, has been synthesized under hydrothermal conditions without addition of any template, surfactant or metal catalyst. Single crystal X-r…
To reduce the iron losses of reactors under inverter power supply, the loss was calculated by using magnetic field analysis, which models a laminated core by combining a 3D solid-core model with a 1D steel plate model, using the finite element method (FEM). In this method, the structure of the laminations and the eddy…
結晶性のアイソタクチックポリスチレンに対して，融点より十分高い温度においてせん断を印加すると配向構造が観測される．この配向構造に着目し，偏光顕微鏡測定・偏光光散乱測定，小角・広角 X 線散乱測定を行った．通常の融点(223℃)より高温においてせん断を印加したときに観測されるミクロンスケールの配向構造は 250℃ にて，一日以上アニールしても融解せずにそのまま存在していた．しかし，昇温すると 270℃ 付近で融解した．また，この配向構造を通常の融点以下に冷却した場合，配向構造を中心にいわゆるシシケバブ構造が成長していた．さらに，アイソタクチックポリスチレンで観測される融点以上での配向構造の形成過程を明らかにするために，配向構造のせん…
Doped polyaniline (PANI) in its emeraldine salt form with different quantities of oxidised multi-walled carbon nanotubes (OxMWCNTs) via in situ electro-polymerisation on the stainless steel (SS) has been performed. Presence of OxMWNTs in the composite was confirmed by thermal gravimetric analysis (TGA) and scanning el…