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。
Self-assembly of silver sulfide, Ag 2 S, nanoparticles is reported for different particles sizes. Monolayers of particles organized in a hexagonal network are formed over very large domains. Small or large aggregates can also be produced. The observations indicate that the formation of self-assemblies of nanoparticles…
Metallophthalocyanine thin films, obtained by vacuum deposition as highly ordered, uniquely oriented films (the Figure shows an iron phthalocyanine film deposited at 200°C), have been sued to fabricated organic field‐effect transistors (FETs). It is demonstrated that the substrate temperature during deposition greatly…
Negatively charged amino acids (aspartic acid, glutamic acid) and a related polymer, poly(α,β-aspartate), have been intercalated within the gallery spaces of layered double hydroxides. Synthesis of these bioinorganic nanocomposites was achieved via co-precipitation involving simultaneous formation of the inorganic lay…
Temperature-dependent neutron diffraction studies on melt-grown crystals of the layered compound ${\mathrm{La}}_{1.2}$${\mathrm{Sr}}_{1.8}$${\mathrm{Mn}}_{2}$${\mathrm{O}}_{7}$ reveal a dramatic structural response to the onset of ferromagnetism and the coincident insulator-metal transition. Unlike the related mangani…
The measurement of current and voltage fluctuations on the same electrochemical cell allows the evaluation of a quantity R n known as noise resistance, which has been proposed as an indication of the corrosion resistance of the material under study. The theoretical basis for the relationship between R n and the electr…
Silicon is at the heart of the microelectronics revolution. Its dominance over other semiconductors is intimately tied to its superior materials and processing properties and to the tremendous base of technology that has developed around it. Another semiconductor is not likely to displace silicon as the material of ch…
Ordered organo–silica–surfactant mesophases containing covalently linked functionalized moieties are prepared with MCM-41-type architectures by template-directed co-condensation of tetraethoxysilane and organotrialkoxysilanes (RO) 3 Si–R′ [R = Me, Et; R′ = (CH 2 ) 3 SH, (CH 2 ) 3 NH 2 , (CH 2 ) 3 OCH 2 CH(O)CH 2 , (CH…
XAFS, IR, and UV−vis (diffuse reflectance and photoluminescence) spectroscopies have been employed to investigate the local environment of Cu I in Cu I -ZSM-5 prepared by gas phase reaction of H-ZSM-5 (SiO 2 /Al 2 O 3 = 90−50) with CuCl. The measurements confirm that the absolutely predominant copper species formed wi…
False-twist-textured yarns of 22 dtex and below with few filaments are commonly used in stretch stockings and tights. Because of the relatively high ratio of filament diameter to yarn diameter in such yarns, a concentric-helix model cannot be assumed, and the geometrical relationships describing their structure have t…
Sudden rearrangement of the tightly packed bubbles in a foam can be induced by application of shear and by diffusion of gas from smaller to larger bubbles. Using diffusing-wave spectroscopy, we measure dynamics at times that are short in comparison with the rate of these events, where the relative bubble configuration…
Electrochromic properties of poly(aniline N‐butylsulfonate)s (PANBUS) coatings on indium‐tin oxide (ITO) glasses exposed to an ion conducting polymer films were investigated. The ion conducting polymer films were prepared via photocross‐linking reactions of methoxy polyethylene glycol‐mono methacrylate with tri(propyl…
The solution of the nonlinear equation for a typical ferroresonant circuit containing a power transformer is shown to be dependent on the value of its initial conditions. It is also shown that a small change in initial conditions leads to a large difference in long-term behaviour of the system, and this makes the futu…
Fabrics woven from ring-, rotor-, and friction-spun yarns, have been compared from the standpoint of comfort. Emphasis has been placed on the tactile and thermal aspects of comfort by the use of the Kawabata Fabric Evaluation System. The effect of the weave on the comfort aspects of the fabric has also been studied. A…
The effect of tramp elements Cu and Sn on the hot workability of mild steels was investigated in this paper. A hot rolling condition was simulated by oxidizing followed by tensile-deforming and the hot workability was assessed by measuring the number of surface cracks. The microstructure at the scale/steel interface w…
Low-grade exhaust heat is used to provide a reliable and independent power source for instrumentation circuitry by means of a thermoelectric generator (TEG). A design of a self-starting DC-DC power converter is developed and optimized for very-low-input voltages (below 300 mV) in order to allow operation at temperatur…
Abstract β‐crystalline phase polypropylene (PP) composites containing 5, 10, 20, 30, and 40% (by weight) of CaCO 3 filler were prepared by injection molding. The β‐form PP was produced by adding a bicomponent β‐nucleator consisting of equal amounts of pimelic acid and calcium stearate. The morphology, static tensile,…
X-Ray photoelectron spectroscopy (known as XPS or ESCA) can differentiate between tetrahedral and octahedral Al atoms in inorganic solids. Although primarily used for the study of aluminosilicates, this semi-quantitative technique is applicable to other materials, irrespective of whether they contain aluminium in one…
A computational technique is described and demonstrated that can decrease by three orders of magnitude the computer time required to treat detailed chemistry in reactive flow calculations. The method is based on the in situ adaptive tabulation (ISAT) of the accessed region of the composition space - the adaptation bei…
The bacterial cellulose produced in an agitated culture (Ag-BC) showed the highest emulsion-stabilizing effect among the examined cellulosk materials. It was clarified that a mechanical barrier and a scaffolding structure composed of fine fibrils of bacterial cellulose interrupted the coalescence of oil droplets to st…
In this paper a dynamic model of the human/ clothing/environment-system is developed. The human body (controlled system) is subdivided into six segments consisting of the head, trunk, arms, hands, legs and feet. Each segment is further divided into the core, muscle, fat, and skin layer. The afferent signal of the cont…