Fabrication of SiN@Si@Cu Thin Films by RF Sputtering as High Energy Anode Material for Li-Ion Batteries.

Silicon and silicon nitride (SiN) are some of the most appealing candidates as anode materials for LIBs (Li-ion battery) due to their favorable characteristics: low cost, abundance of Si, and high theoretical capacity. However, these materials have their own set of challenges that need to be addressed for practical applications. A thin film consisting of silicon nitride-coated silicon on a copper current collector (SiN@Si@Cu) has been prepared in this work via RF magnetron sputtering (Radio Frequency magnetron sputtering).

Chemical characterization of fine particles (PM) at a coastal site in the South Western Mediterranean during the ChArMex experiment.

As part of the ChArMEx project (Chemistry-Aerosol Mediterranean Experiment, http://charmex.lsce.ipsl.

Optical characterization of a compact multilayer-mirror polarimeter in the extreme-ultraviolet range.

A molybdenum-silicon (Mo/Si) multilayer-mirror (MLM) polarimeter has been constructed and used to analyze the extreme-ultraviolet (EUV) emission from excited HeI and HeII states following electron impact on He for wavelengths ranging from approximately 256 to 584 A. A ratio of reflectivities for s- and p-polarized light, R(s):R(p) approximately , and a resolving power of lambda/Dlambda approximately 6 at 304 A were obtained. These characteristics and the use of a VYNS (a copolymer material composed of 90% vinyl chloride and 10% vinyl acetate) spectral filter were sufficient to allow a detailed polarization study of the first two members of the Lyman series of He(+) at wavelengths of 304 A (HeII p --> s) and 256 A (HeII p --> s) for impact-electron energies ranging from threshold to 1500 eV.