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。
Chemically reactive impurities such as oxygen and fluorine alter the diffusion and activation kinetics of boron during the anneal process. An examination of the role these impurities play during the anneal process indicates important differences between microwave and lamp-based rapid thermal processing (RTP) for low e…
Non-magnetic materials of bismuth and zinc were deposited on glass and copper plates used as a substrate under a high magnetic field of 12 T . The substrate was set in perpendicular or parallel to the magnetic field direction at the position of the maximum magnetic field intensity. In the case with the glass substrate…
This work presents a new plasma treatment for the adhesion enhancement of a plasma deposited silica layer to polycarbonate. After initial oxygen plasma treatment of the polycarbonate surface, a thin hydrogenated amorphous carbon layer is deposited before the silica layer. This interlayer is found to increase the numbe…
Second-Harmonic Scattering (SHS) of light by laminar ferroelectric domains of the low temperature phase of RbH 2 PO 4 is reported. CCD images of the far-field SHS pattern reveal up to six-off axis intensity maxima normal to the ferroelectric axis. These maxima are identified from the quasi-phase matching conditions wi…
The processes of multiplication of electronic excitations (MEE), connected with the creation of secondary excitons or electron-hole (e-h) pairs by hot conduction electrons, are realized in wide-gap metal halides and oxides. In oxides, secondary e-h pairs can be also formed by 27-40 v eV photons due to L 1 VV Auger tra…
The Experimental Breeder Reactor - II (EBR-II) at Argonne National Laboratory - West (ANL-W) was shutdown in September 1994 as mandated by the United States Department of Energy. Located in eastern Idaho, this sodium-cooled reactor had been in service since 1964, and was a test facility for fuels development, material…
A simplified system for measuring time-resolved photoluminescence (PL) induced by UV laser pulses (lambda = 337 nm) is designed by a combination of a commercial PL reader and a digital oscilloscope. Using this system, PL emissions after pulsed UV excitation from a chip of sapphire (Al2O3) are successfully measured wit…
Pre-treatment procedures for the analysis of trace sulfur amounts in high-purity iron are investigated. The sulfur content of metal samples has been determined with an infrared absorption method after combustion by high-frequency induction. An analytical sample with a tungsten–tin mixture as reaction accelerator in a…
A poly(ester imide) (PEI) in the smectic crystalline (SE) state exhibits both a medium-angle X-ray scattering (MAXS) peak and discrete small-angle X-ray scattering (SAXS). Based on quantitative analysis of absolute scattering data the observed SAXS is attributed to the formation of a sandwich structure in which a cent…
The first example of a wholly aromatic rod-like macrocyclic mesogen has been synthesized by a two step polycondensation of catechol (C) with of 4,4′-biphenyldicarboxylic acid (B). Pure crystalline [2+2] cyclo-dimer was isolated from the polymerization mixture in 25% yield by a single silica gel column chromatogram and…
On the Raman scattering data for mixed crystals Sn 2 P 2 (Se x S 1 m x ) 6 additional bands with intensity maximum lying at the center, or at the sulphide and selenide ends of the concentration interval are related to the internal vibrations of various anion impurity configurations. Intensity of additional bands is pr…
The textile industry lacks an objective approach for determining the level of comfort and amount of free movement in narrow skirts. My research focused on developing a model for predicting the level of comfort and movement of narrow skirts sewn according to the fabric mechanical property of the Fabric Assurance by Sim…
Base hydrolysis kinetics of chloropentaaminecobalt(III) complexes of a range of acyclic and cyclic pentaamine ligands, incorporating the rigid -NH-CH 2 -C(CH 3 )(NH 2 )-CH 2 -NH- motif, which must coordinate facially in octahedral complexes, are analysed in terms of ground state structural influences on hydrolysis rat…
A demand to increase current density of ULSI interconnections with shrinkage of feature sizes inevitably brings about temperature rise due to Joule heating. We studied how temperature distribution changes with an increase in the current density and further investigated its effect on electromigration-induced failures.…
The structural and optical features of Porous Silicon(PS) were investigated; the porous silicon was prepared by electrochemical etching of silicon wafers in HF solution. The morphologies and Photoluminescence(PL) features of the PS were investigated in terms of etching time, current density and aging conditions. The a…
The operating environments of rolling bearings are remarkably varied. With the use of bearings in various corrosive environments increasing, interest in stainless steel is growing. AISI 440C has been widely used in applications where corrosion resistance is of primary concern. However, its performance has not always b…
The modifying effect of rare earth (RE) oxide on inclusions in hardfacing metals of medium-high carbon steel was investigated by means of thermodynamics. The t hermodynamic analysis for inclusion formation shows that RE oxide can be redu ced to RE element by carbon, then the RE element can react with oxygen and sulfu…
采用射频等离子体增强的热丝化学气相沉积(RFHFCVD)技术在石英玻璃衬底上制备了表面光滑、晶粒致密均匀的纳米金刚石薄膜.用扫描电子显微镜(SEM)和台阶仪观测薄膜的表面形貌和粗糙度,x射线衍射(XRD)和Raman光谱表征膜层的结构,并用紫外可见近红外光谱仪测量其光透过率.实验结果表明,衬底温度、反应气压及射频功率对金刚石膜的结晶习性、表面粗糙度及光透过率均有很大程度的影响,其最佳值分别为700℃,2×133Pa和200W.在该最佳参量下经1h的生长即获得连续、平滑的纳米金刚石膜,其平均晶粒尺寸为约25
Crosslinked polyethylene(XLPE) has been widely adopted as insulating material for high voltage power cables up to 500kV. Further improvement of electrical and thermal properties on insulating material is required in order to increase cable operation efficiency. Therefore, the development of novel insulating material p…
Tension tension cyclic fatigue tests were conducted at room temperature and at 1300℃ in 10 4 Pa vacuum under the condition with a sinusoidal loading frequency of 60 Hz and stress ratio of 0 1 for a three dimensional woven C fiber SiC matrix composite (3D C/SiC) prepared by chemical vapor infiltration (CVI) The results…