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。
Carbon nanotubes (CNTs) offer unique properties such as highest current density exceeding 10 9 A/cm 2 , ultra-high thermal conductivity as high as that of diamond, ballistic transport along the tube and extremely high mechanical strength with high aspect ratio of more than 1000. Because of these remarkable properties,…
Abstract One of the conventional methods to develop biodegradable plastics at a reasonable cost is manufacturing the blend of expensive polycaprolactone (PCL) and lower‐priced starch. However, past studies have shown that the amount of starch blended with plastics is relatively small and the dynamic properties are not…
In this work, antiwear nanoimprint templates were made by depositing and patterning diamondlike carbon (DLC) films on Si and quartz. A capacitively coupled plasma enhanced chemical vapor deposition (PECVD) system was configured to deposit 100nm–1μm thick DLC films on Si and quartz substrates. These films were characte…
The effects of both single doping and simultaneous codoping on the structural, electronic, and optical properties of Si nanocrystals are calculated by the first-principles method. We show that the amount of the nanocrystal relaxation around the impurity is directly related to the impurity valence. Moreover, both the n…
Rib-loaded waveguides containing Er3+-coupled Si nanoclusters (Si-nc) have been produced to observe optical gain at 1535 nm. The presence of Si-nc strongly improves the efficiency of Er3+excitation but may introduce optical loss mechanisms, such as Mie scattering and confined carrier absorption. Losses strongly affect…
When {CS/HA}n layer-by-layer films assembled by oppositely charged chitosan (CS) and hyaluronic acid (HA) were immersed in myoglobin (Mb) solution at pH 5.0, Mb was gradually loaded into the {CS/HA}n films, designated as {CS/HA}n-Mb. The cyclic voltammetric (CV) peak pair of Mb FeIII/FeII redox couple for {CS/HA}n-Mb…
Abstract Raman spectroscopy, complemented by infrared spectroscopy, has been used to characterise the ferroaxinite minerals of the theoretical formula Ca 2 Fe 2+ Al 2 BSi 4 O 15 (OH), a ferrous aluminium borosilicate. The Raman spectra are complex but are subdivided into sections on the basis of the vibrating units. T…
ZrO2: 3mol% Y2O3 powders were mixed in different proportions to ZrO2: 8 mol% MgO, pressed and sintered at 1500°C for producing composites with oxygen ion conductivity better than that of ZrO2: 8 mol% MgO and thermal shock resistance better than that of ZrO2: 3 mol% Y2O3. The electrical conductivity was evaluated by th…
The problem of identifying the coincidence site lattices produced by the disorientations of any rational lattice is investigated. A very simple new procedure for computing the CSLs is presented, based on Grimmer's reciprocity theorem and application of the reduction algorithm introduced by Buerger for finding reduced…
This study focuses on the adsorption properties of activated carbon nanofibers (CNFs) fabricated by electrospinning polyacrylonitrile solutions dissolved in dimethylformamide, followed by heat treatment at high activation temperatures (700, 750, 800 °C). The samples were characterized by BET, SEM, and XRD. In addition…
Two phase metals during cyclic loading can suffer from non-uniform load or strain sharing between the phases due to elastic/plastic anisotropy. This can strongly influence the fatigue damage and crack initiation behavior. In this study, the fatigue damage and crack initiation behavior of an austenitic-ferritic duplex…
In this work, was proposed to produce nanosized α-Al2O3 powder from precipitation reactions, in order to reduce the alumina ceramics sintering temperature. For this an addition of nanosized powder in the commercial microsized powders was done. The nano and microsized powder particle mixtures were obtained by precipita…
The structure of spunbonded nonwovens is characterized by a filament orientation distribution function that is a length-weighted density. This density was defined according to the `Equivalent Pore Model' and was experimentally determined by an optical method. The method permits a description of the anisotropy and the…
Abstract Summary: The use of electrostatically addressable templates for the directed assembly of conducting polymers and pattern transfer to another polymer substrate is demonstrated. Doped conducting polyaniline was selectively assembled on the patterned template assisted by a DC electric field. Adding an insulated…
Abstract Kinetics and heat transfer during vulcanization of various blends of polybutadiene (BR) and polyisoprene (NR) were studied simultaneously using mechanistic approach for description of reaction kinetics. Fourier transform infrared spectroscopy (FTIR) was used to study the kinetics of accelerator and retarder c…
Aging and history in glassy polymer films are investigated in the frame of solvent-induced glass transition. By decreasing the pressure of a solvent vapour surrounding a polymer film, the film goes from the rubbery swollen state to the glassy dry state. Gravimetry experiments in a pressure-controlled chamber were perf…
Phase transformation temperatures of the SMA annealed at different annealing temperature were investigated through a series of DSC test. A new phase transformation model was proposed to predict the phase transformation and a numerical analysis was conducted to demonstrate the applicability of the new model. According…
Tomography became an important field about 40 years ago with the application x-rays to human subjects to detect tumors In the classical Computerized Axial Tomography (CAT) scan, a line of x-ray sources and detectors are rotated about the patient. The practice quickly spread to electron microscopy, although in this cas…
Abstract An alternative process to the conventional melt compounding for the incorporation of paper fibers into polyolefins was developed, based on the dispersion of paper fibers in a hot polyolefin solution and the subsequent precipitation of the polymer by cooling, which leads to an homogeneous polyolefin/paper comp…
Abstract Several thermoplastic starches (TPSs), i.e. ethylenebisformamide, sorbitol and ethylene‐sorbitol plasticized (EPTPS, SPTPS and ESPTPS) were prepared and their retrogradation was investigated by X‐ray diffraction, Fourier‐transform infrared spectroscopy (FT‐IR) and scanning electron microscopy (SEM). These stu…