[Study on Self-Absorption Properties in Laser Induced Breakdown Spectroscopy from Copper Sample].

In this paper, a Nd∶YAG laser with an operating wavelength of 532 nm was employed to generate plasmas of TU0 copper sample on the surface. With grating spectrograph and intensified charge coupled device(ICCD) as spectroscopy analysis detection equipment, self-absorption properties of five atomic lines of Cu(Ⅰ) with wavelengths of 324.754, 327.

[XPS and UPS characterization for Cr and Mn in high-temperature oxide films of bulk nanocrystalline 304 stainless steel].

The authors studied the binding energies of valence electrons of two oxide scales, the atomic percentages of Cr and Mn elements in two oxide films, the work function of two oxide films on bulk nanocrystalline 304 stainless steel (BN-SS304) and conventional polycrystalline 304 stainless steel (CP-SS304). BN-SS304 was prepared by severe rolling technique, and the two oxide films were formed in atmosphere at 900 degrees C for 24 hours oxidation on BN-SS304 and CP-SS304 surfaces. In the two oxide films, Cr and Mn elements exist in the forms of Cr3+, Cr0, Mn4+ and Mn0.

[Polarization-sensitive characteristics of the transmission spectra in photonic crystal with nematic liquid crystal defects].

The polarization-sensitive characteristics in the transmission spectra of TiO2/SiO2 optical multilayer films of one-dimensional photonic crystal (1D PC) with nematic liquid crystal defects were investigated in the present paper. The transmission spectra measurements and simulated results show that the polarization-sensitive feature was obvious when natural light was normal incident onto the parallelly aligned nematic liquid crystal. There were peaks of the extraordinary light (TE mode) with center wavelengths 1831 and 1800 nm and the ordinary light (TM mode) with center wavelengths 1452 and 1418 nm in the photonic forbidden band, respectively.