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。
A systematic calculation of the backscattering factor in quantitative analysis by Auger electron spectroscopy has been performed for the primary electron beam of energy from the threshold energy of inner-shell ionization to 30 keV at the incident angle of 0°–89° and for principal Auger transition and Auger electrons e…
The focus of this study has been to predict wood plastic composite (WPC) properties using analytical models dedicated to reinforced composites and to define their limits. Experiment tests have been realized to characterize mechanical properties of a commercial WPC. On one hand, good compressive and three points bendin…
We have observed net optical gain by current injections to ultra-thin Si embedded in a resonant optical cavity. The cavity consists of a dielectric waveguide fabricated by CMOS and MEMS process. The photoluminescence (PL) spectra show narrow resonances peaked at the designed wavelength, and the electroluminescence (EL…
A new class of GeSe 2 –Ga 2 Se 3 –AgI glass systems has been prepared and its glass‐forming region was identified. The maximum dissolvable AgI in glasses was up to 60 mol%. The thermal, optical, and structural properties of glasses were investigated as a function of AgI and Ga 2 Se 3 contents. The GeSe 2 –Ga 2 Se 3 –A…
Optical transmittance and reflectance on ferroelectric BaTi 2 O 5 glasses prepared recently by a containerless synthesis technique are measured at room temperature in the wavelength range 190–800 nm. The fundamental absorption edge located around 340 nm demonstrates the colourless and transparent character of the glas…
Abstract We review solid state electrochemistry, material properties, and electrochemical cells. Topics discussed are point defects, solid electrolytes, mixed ionic electronic conductors, examples of solid electrochemical cells, and electrochemical reactions. Experimental methods for characterizing the electrical prop…
The gas phase reaction thermodynamics in the chemical vapor deposition (CVD) process of preparing boron carbides via the precursors of BCl 3 – C 3 H 6 (propene)– H 2 is investigated with a set of 325 gaseous species, in which the data for 135 species are evaluated in this work. The thermochemistry data are calculated…
This work presents results of investigations using the Mssbauer spectroscopy technique and their interpretation concerning transformation of to cementite carbides during tempering in relation to the previously conducted dilatometric, microscopic and mechanical investigations. Investigations were performed on 120MnCrMo…
The Tm3+/Yb3+:NaGd(MoO4)2 crystal has been grown by Czochralski method along the c axis. Polarised absorption spectrum was measured at room temperature and the corresponding analysis was carried out in the framework of Judd–Ofelt theory. The fluorescence spectra were also investigated and the upconversion blue emissio…
The corrosion behavior of copper in deionized water without and with 3-amino-5-mercapto-1,2,4-triazole (3-AMT) was investigated. Potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and weight-loss measurements were applied to study the metal corrosion behavior in the absence and presence of dif…
The mechanisms of discharge channel expansion and constriction are briefly examined, with particular reference to discharge behavior between dielectric surfaces and their effect upon the magnitude and rise time of PD pulses.
Portable electronics, such as notebooks, cameras and cell phones, can be easily dropped by our miss handling. To mimic the real dropping, drop tests are usually used to study the dynamic response of Printed Circuit Board (PCB) as well as the reliability of the solder ball joints in laboratory. The reliability of solde…
The magnetic and dielectric properties of Sr-substituted Zn 2 -Y hexagonal ferrites (Ba 2- x Sr x Zn 2 Fe 12 O 22 , 1.0 ≤ x ≤ 1.5) are studied in this paper. Sr substitution will lead to the variation of cation occupation, which influences both the magnetic and electric properties. As Sr content x rises from 1.0 to 1.…
By cyclotetramerisation of 1,2-bis(p-tolylmethylthio) and 1,2-bis(o-tolylmethylthio) maleonitrile in the presence of magnesium butanolate, magnesium porphyrazinates carrying eight (p-tolylmethylthio) and (o-tolylmethylthio) units on the peripheral positions have been synthesised. Conversion of the magnesium porphyrazi…
This paper is devoted to investigate which basic mechanisms are responsible for the major part of the shielding of conductive textiles by means of measurement of the shielding effectiveness (SE). Both woven and nonwoven textiles with different thickness, nickel amount and fabric geometry are examined. Results show tha…
Copper oxide nanorods with average diameters and lengths of ca. 8 nm and 400 nm, respectively, have been prepared by a simple onestep solid-state reaction in the presence of various surfactant micelles. The effect of three different surfactants viz., SDS, CTAB and Triton X-100 and their critical micellar concentration…
The effect of annealing on implanted Ga of diamond-like carbon (DLC) films on Si substrates fabricated by focused-ion-beam chemical vapor deposition (FIB-CVD) was investigated. Thermal desorption spectroscopy showed two Ga + peaks at 470 and 630 °C. These temperatures agree with the results of energy-dispersive X-ray…
The first demonstration of the use of functionalised polystyrene beads as “polymeric ligands” for the immobilisation of quantum dots (QDs) is presented. Specifically, thiol-containing polystyrene microspheres were synthesised and used to incorporate QDs via a swelling/doping strategy. The resultant composite materials…
We have set up a two-dimensional spatial field mapping system to measure graphically the quasi-free-space electromagnetic wave in a parallel plate waveguide. Our apparatus illustrates a potential application in characterizing the microwave absorbing materials. From the measured mappings of the microwave field, the vis…
We report herein the binding studies of three bis-porphyrinic tweezers bearing nucleosidic linkers and a bis-porphyrinic dipeptide with two bidentate bases of different size, DABCO and 4,4' -bipyridine. In the nucleosidic series, the nucleoside confers, for two dimers out of three, sufficient preorganization to the di…