Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Abstract—In this paper, a new route for the realization of left-handed metamaterials (LHMs) is suggested. It is based on commercially available dielectric resonators with low loss and high temperature stability. By etching simple metallic strips on surface of dielectric resonators, the desired resonance modes can be e…
We adopted the and Grignard metathesis (McCullough) methods to synthesize three poly(3-hexylthiophene)s (P3HTs) exhibiting different degrees of regioregularity and then blended them with [6,6]-phenyl- -butyric acid methyl ester (PCBM) to obtain bulk heterojunction phases on the top of an acid-doped polyaniline nanotub…
It was reported in 1984 that cellulose could be dissolved in aqueous sodium hydroxide solution when the intramolecular hydrogen bonds of cellulose were partially broken down by physical treatments such as steam explosion. Although there have been many studies on alkali-soluble cellulose, little is known about cellulos…
Local probing of the galvanic coupling between micrometer-sized Al 2 Cu phases and the surrounding aluminum-based matrix of a specially heat-treated 2011 alloy is investigated using a microcapillary electrochemical cell. The aging of an isolated Al 2 Cu particle, i.e., selective dissolution of aluminum, is controlled…
A novel approach towards fabricating free-standing and self-supporting highly aligned CNT arrays with integrated top and bottom contacts for the design and implementation of future CNT-based sensor devices is reported.
We introduce a simple route towards hierarchical TiO2 nanopatterns using a block-copolymer template approach combined with a dip-coating process and soft inorganic chemistry. The bimodal characteristic is associated to the preparation of solutions that contain two distinct populations of micelles PB-b-PEO (with the sa…
Magnetic properties (coercive force and saturation magnetization) of SAE 4340 steel, heat treated in different ways, were measured in a Vibrating Sample Magnetometer. Four soaking temperatures were investigated: 860°C, 960°C, 1060°C and 1160°C. The oil-quenched samples were tempered at different temperatures between t…
The numerical methodology for multi-phase field model has been presented in association with calculation of phase diagram. Calculations for FA-mode solidification of stainless steel were performed in conditions of multi-component and multi-phase alloy. It was confirmed that differences of residual δ-phase contents bet…
This work describes a simple procedure for preparation of chitosan (CHI) scaffolds containing ciprofloxacin (CFX) anhydrous crystals. The capability of CHI scaffolds to control the CFX crystal size and to preserve the anhydrous crystal habit even after long term storage was useful for the development of drug delivery…
A high purity α-layered sodium disilicate (α-Na2Si2O5) has been synthesized by employing a mixture of 84% α-Na2Si2O5 and 16% δ-Na2Si2O5 as seed, and characterized by XRD, 29Si MAS NMR, FT-IR, SEM and TG. The experimental data showed that α-layered sodium disilicate may been synthesized by adding 15% seed at 780 °C for…
Carbon nanotubes (CNTs) were synthesized by a catalytic chemical vapor deposition method (CCVD) of ethylene over alumina and silica supported bimetallic catalysts based on Fe, Co and Ni. The catalysts were prepared by a precipitation method, calcined at 600 ?C and in situ reduced in hydrogen flow at 700?C. The CNTs gr…
Molecular aluminosilicate Al(SH)(micro-O)Si(OH)(O(t)Bu)(2) ( = [HC{C(Me)N(Ar)}(2)](-), Ar = 2,6-(i)Pr(2)C(6)H(3)) has been prepared from Al(SH)(2) and ((t)BuO)(2)Si(OH)(2) in high yield. When reacted with one equiv. of water, the unique aluminosilicate containing two terminal hydroxy groups Al(OH.THF)(mu-O)Si(OH)(O(t)…
Modification of wood fiber/flour (WF) surfaces can improve their compatibility with hydrophobic plastic matrices and reduce composite water uptake. WF was esterified with octanoyl chloride and palmitoyl chloride. Modified WF was analyzed by FT-IR. More extensive esterification occurred in highly polar dimethylformamid…
We present an in-depth investigation of Au nanoparticles self-assembled on a zigzag-like TiO(x)/Pt(111) ultrathin polar film, whose structure is known in great detail. The peculiar pattern of defects (picoholes) templates a linear array of size-selected (ca. 1 nm) Au nanoparticles without disruption of the titania lay…
Nanocrystalline zinc oxide doped with different concentrations of Fe 2 O 3 (from 5 to 50 wt.%) has been prepared by means of coprecipitation and calcination processes. Depending on the chemical composition, phases of hexagonal ZnO, and/or cubic ZnFe 2 O 4 were identified. The mean crystallite size of the latter phase,…
Hydrogen production by radiolysis of water absorbed on solid is a major problem for nuclear waste management. In the present study, we demonstrate that controlling extreme surface properties of the irradiated material allows a direct tuning of the hydrogen production under irradiation. We achieve this control on a mod…
Active brazing fillers were produced by adding Ti to a AgCuIn alloy and used to fabricate ceramic-metal joints. The alloy was investigated by hardness measurements and microscopy analyses and the joints tested in bending. The results show that Ti has a hardening effect. However, for the considered values of Ti additio…
寒天ゲルとゼラチンゲルの摂取量および咀嚼回数が，食塊の咽頭部通過時における移動速度と食塊の力学特性に及ぼす影響を，超音波パルスドップラー法，テクスチャー測定ならびに官能評価により検討し，以下の結果を得た．寒天ゲルの硬さは，摂取量が少なく，咀嚼回数が多くなるほど低下し，ゼラチンゲルの硬さは口腔内停滞時間の長い，30回と50回咀嚼で低下し，摂取量の影響は小さかった．最大速度について，寒天ゲルで高い値を示したのは5回咀嚼の9gと12gにおいてであり，ゼラチンゲルでは，50回咀嚼の3gと6gであった．これらの結果には，寒天ゲルでは主に咀嚼によって破砕された食片の大きさと量が影響しており，ゼラチンゲルでは咀嚼後の融解の程度が主に影響している…
Upon alternating UV and visible light irradiation, the surface of a coated film of 1,2-bis(2-methyl-5-phenylthien-3-yl)perfluorocyclopentene showed reversible surface topographical changes between a lumpy surface with small structures (∼1.0 µm) and a smoother surface with larger structures (5∼10 µm), accompanied by ch…
The solid state magnetic properties of an extensive series of neutral radical (S = ½) complexes associating cyclopentadienyl (Cp) and dithiolene ligands and formulated as [CpNi(dithiolene)]˙, are successfully rationalized through a combination of structural analysis of the crystal structures and broken symmetry DFT ca…