High Resolution Surface Mass Spectromery by TOFSIMS CEAC高分辨率质谱通过TOFSIMS的表面.pptVIP

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High Resolution Surface Mass Spectromery by TOFSIMS CEAC高分辨率质谱通过TOFSIMS的表面.ppt

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High Resolution Surface Mass Spectromery by TOFSIMS CEAC高分辨率质谱通过TOFSIMS的表面

TOF-SIMS Yield Surface Imaging Rat Brain CrossSection Mass resolution, accuracy lateral distribution of Cl- on cubic silver halide crystals line profile ?x16%-84% = 50 nm 16 % 84 % Example: Photographic Crystals (Sample provided by the University of Antwerp, Belgium (Prof. Gijbels)) Lateral resolution intensity B concentration / atoms/cm3 depth / nm Deth resolution B monolayer in Si Influence of the Substrate and the Surface Coverage Cluster bombardment O ? Ar ? Xe ? SF5 ? CmHn ? C60 Ga ? Aun ? Bin Main features of TOF-SIMS Parallel mass detection High (unlimited) mass range High mass resolution 10 000 High mass accuracy (1-10 ppm) High transmission for high masses and at high mass resolution All elements and isotopes Molecular species High sensitivity (ppb, attomole) High lateral (50 nm)and depth (1nm) resolution mass resolution (FWHM): Ti: 13119 Cr: 12813 Fe: 12009 Cu: 13849 data taken from 003_r.dat coverage (atoms/cm2): Ti: 6.1E10 Cr: 8.2E09 Fe: 3.1E09 Cu: 2.1E10 Trace Metal Detection / mass resolution 1 Monolayer = 1.5E15 atoms/cm2) ? the error is estimated to be within a factor of 2 to 3. TOF-SIMS Detection Limits intensity B concentration / atoms/cm3 depth / nm depth / nm Depth profiling Reconstructed profile (Li, Na) ICPS 98 2D Images and Cross Sections (Sample provided by Prof. Martin, RWTH Aachen, Germany) Material Science Blooming Effect on Polymer Polymer (PP) Melt Stabiliser Antioxidant Polymer, Stabiliser, Antioxidant Field of View: 284 x 284 μm2 Particle Analysis / Uranium overlay Nanoextraction Laser-SNMS TOF-SIMS overlay LB-multilayer system: Lipids: DPPC/DPPG (4:1), Protein: 0.4 mol% SP-C AFM topography FLM 10 μm TOF- SIMS + 10 μm Laser- SNMS 110: C5H8N3 58: C3H8N 30: CH4N 58: C3H8N Protein Lipid Phase Separation dye-labeled lipid Au2 imaging - Placenta cell complex Example provided by Alain Brunelle,ICSN, CNRS, France Fe sum ofcholester