Materials Literature
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In back-end of line processing, the polymer deposited on the dielectric sidewalls during the etch must be removed prior to subsequent processing steps to achieve high adhesion and good coverage of materials deposited in the etched features [1,. Typically, this is done by a combination of short plasma treatment and dil…
Possibility of depositing zinc-fluoroplastic composite electrochemical coatings from ammonium chloride electrolytes, with the role of a dispersed phase played by liquid wastes from production of fluoropolymers and secondary suspensions of F-4D and F-4MD fluoroplastics, was studied. The optimal deposition parameters of…
In this paper, aiming at three material parameter functions of functionally graded coating (FGC) which have different continuities, the influence of functionally gradient coating material continuity on the fracture behaviors of the crack on the interface between the base material and coating is studied. The results sh…
2·25Cr–1Mo steel is widely used for high temperature applications as heat exchangers and pipings in power plants. The microstructural instability and discontinuity of oxide scale are problems associated with their long exposure at high temperature. This effect limits the life cycle of the component. In the present inv…
The kinetics of the relaxation processes in silver iodide nanocrystals synthesized in a nanoporous silicate glass matrix and excited by femtosecond laser pulses has been experimentally studied. A short-lived characteristic transmission band is found to be formed in the spectral range of exciton absorption of nanocryst…
In this paper, we studied lasing action in dual-doped organic microcavity with cascade Forster energy transfer between polymer and two fluorescent dyes in surface emitting microcavities, which formed by sandwiching a poly(N-vinylcarzole) (PVK) film doped with 8-trishydroxyquinoline (Alq3) and 4-(dicyanomethylene)-2-te…
nconel718 is particle reinforced metal matrix composites widely applied in important fields. To evaluate the impact of particles on the machined subsurface in Inconel718 during high-speed machining operation, a multi-scale orthogonal cutting finite element (FE) model is established. A cohesive element technique is ado…
Texture formation of AA5182 for compressive deformation with a range of temperatures from 673K to 823K and strain rates from 5.0×10-4to 5.0×10-2s-1is experimentally investigated by EBSD technique and X-ray diffraction. Fiber textures are observed in all deformation conditions. Stress regions are divided into a low str…
In the present work, a series of glass samples in Ge-Se-Bi system are prepared. XRD analysis is made on samples for identifying the type of precipitated crystals from glass matrices. Effects of glass matrix composition on crystallization behaviors are discussed. Results show that Ge and Bi content of glasses in the Ge…
The melt grafting of maleic anhydride (MAH) onto poly (3-hydroxybutyrate-co-4-hydrox-ybutyrate)[P(3HB-co-4HB)]/polylactic acid (PLA) blends were carried out via reactive extrusion. The effects of the contents of MAH, initiator (BPO) on the graft ratio were studied. The effects of grafting modification on thermal prope…
This paper investigates octagonal symmetric quasicrystalline (QC) dielectric media to realize slow-light propagation of resonances inside the band gap region. The process can be initiated by designing different configurations of planar waveguide patterns. The finite-difference time-domain (FDTD) method clearly allows…
Two new coordination polymers [Ni(2,4′-oba)(1,10-phen)]n (1) and {[Ni(2,4′-Hoba)2 (4,4′- bipy)(H2O)2]·2H2O} n (2) have been synthesized [2,4′-H2oba=2-(4-carboxyphenoxy)benzoic acid, 1,10-phen=1,10-phenanthroline and 4,4′-bipy=4,4′-bipyridine]. The framework structures of these polymeric complexes have been determined…
Abstract: The presented study mainly focused on investigating detailed engineering properties of municipal solid waste incineration residues as road construction materials with different application classes. Also, the leachability of heavy metals and salts in the residues as a function of the ratio of liquid and solid…
Samples of poly( N,N,N,N -trimethylmethacryloyloxyethylammonium) methyl sulfate prepared by suspension and bulk polymerization were studied.
Field emission properties of a planar triode structure with double cathodes have been investigated. ZnO nanotetrapod emitters mixed with carbon nanotubes(CNTs) were fabricated by the screen-printing method. The potential distribution, electron trajectoryies distribution and current density distribution were simulated…
The process parameters used in the hybrid superplastic forming have been optimized. Since the hybrid process was a combination of hot drawing and gas blow forming, the effects related with the two forming phases were taken into account to facilitate the process design. The punch shape has been modified. A two-stepped…
Changes of mechanical properties and chemical structure of polyester (PET) fibers are studied through UV simulated accelerated ageing experiments with N2, air and O3 as the atmosphere. The structure, thermal stabilities and tensile strength are obtained by FTIR, DTA-TG, XRD, SEM and micro-mechanics test. The differenc…
We theoretically study the frequency-dependent characteristic of the electron dynamic mobility in a semiconducting, single-walled, zigzag carbon nanotube (CNT). The dynamic mobility is obtained by solving the balance equations and taking into account the relaxation processes within a nonparabolic band picture. The ele…
A simple one-dimensional account of space charge in an anode-cathode (AK) gap is based on a transit time model. Two limiting cases are treated: thermionic and field emission. Each case is compared to experimental thermionic and field emission data in the literature and the correspondence is shown to be good.
A new photochromic diarylethene compound, 1-(2,5-dimethyl-3-thiophene)-2-[5-(4-pyridine)-2-methyl-3-thienyl]perfluorocyclopentene(1a) was synthesized. its photochromic and fluorescent properties have been investigated in detail. The results of the research showed that it has shown good photochromic behavior and fluore…