Multilayers with high-reflectivity at 19.5 nm and low-reflectivity at 30.4 nm

The multilayer （ML） mirror with high-reflectivity （HR） at a specific emission line of 19.5 nm （Fe line） and low-reflectivity （LR） at 30.4 nm （He line） is needed to be designed and fabricated for observing the image of sun. Based on a variety of optimizations utilized different structures, the design is performed and the final results demonstrate that the reflectivity at 30.4 nm does not achieve minimum value when the reflectivity at 19.5 nm reaches the maximum value. The tradeoff should be done between the HR at 19.5 nm and LR at 30.4 nm. One optimized mirror is fabricated by direct current magnetron sputtering and characterized by grazing-incident X-ray diffraction （XRD） and synchrotron radiation （SR）. The experimental results demonstrate that the ML achieves the reflectivity of 33.3% at 19.5 nm and of 9.6× 10-4 at 30.4 nm at the incident angle of 13°.     

Preparation and photoluminescence of nanowire array and films of cadmium sulfied by electrodepositing in organic solvent

Nanowir array and film of cadmium sulfide were prepared by eletroplating in organic solvent dimethyl sulfoxide with CdCl2 and element sulfur under different temperature and current density.The UV-VIS absorption spectra show that increasing the electroplating temperature is benefit to forming perfect crystallites of energy shift for the lowest sveral excitons is given and compared with th experiment.The photoluminescence spectrum consists of two parts:the first is produced by recombination of the defcets and the second by recombination of excitons.     

Synthesis of Novel Chiral Diol Ligands for the Enantioselective Reactions

The chiral diols ((,(,((,((-Tetraaryl-1,3-dioxolane-4,5-dimethanols) have been used for the formation of cyclic titanates and similar derivatives of Mg, Al and Zr. These complexes of oxophilic metal centers were employed in catalytic and stiochiometric enantioselective reactions such as enantioselective addition reactions of carbon-centered nucleophiles to aldehydes1, [2+2] cycloadditions2, and Diels-Alder reactions3. So far, the two hydrogen atoms of all this type of diols are in trans form…     

SMALL SAMPLE PROPERTIES OF THEPOWER FUNCTION OF F TESTS IN TWO-WAYERROR COMPONENT REGRESSION

1.IntroductionThetwcawayerrorcomponentregressionmodelmsybeexpressedasif=o

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卤素及卤素离子的电子结构

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Some exact solutions of the oscillatory motion of a generalized second grade fluid in an annular region of two cylinders

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Heteropolytungstates Containing Organotin and Cobalt or Zinc Atom

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