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Applications of Ag Dimers in Fluorescence spectroscopy&Raman Scattering

Applications of Ag Dimers in Fluorescence spectroscopy&Raman Scattering. Group members:Benjun Liu Junjie Yang Runmin Zhang Yuxiang Qin. Introduction Experimentation Outlook. Introduction Experimentation Outlook. Background. Why ? How?. Fluorescence Enhancement of Ag Clusters.

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Applications of Ag Dimers in Fluorescence spectroscopy&Raman Scattering

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  1. Applications of Ag Dimers in Fluorescence spectroscopy&Raman Scattering Group members:Benjun Liu Junjie Yang Runmin Zhang Yuxiang Qin

  2. Introduction • Experimentation • Outlook

  3. Introduction • Experimentation • Outlook

  4. Background Why ? How?

  5. Fluorescence Enhancement of Ag Clusters

  6. Synthesizing of Ag Dimers

  7. CTABand MUA’s roles in synthesizing Ag Dimers

  8. Introduction • Experimentation • Outlook

  9. Experiment Section

  10. Preparation of Ag NPs

  11. Phenomena

  12. Absorption Spectrum Small peak at 600nm ——Overheated？

  13. Preparation of Ag NPs

  14. Absorption Spectrum

  15. Glass Slide’s Modification with APS

  16. Ag NPs’ aggregation

  17. Ag NPs’ aggregation

  18. Absorption Spectrum

  19. Ag NPs Unannealed Annealed

  20. Ag Dimers Unannealed Annealed

  21. SEM Ag NPs Ag Dimers

  22. Fluorescence Enhancement of Ag Clusters

  23. Fluorescence Spectrum(465nm)

  24. Introduction • Experimentation • Outlook

  25. Outlook

  26. Non-Damage detection of DNA/RNA molecules Lakowicz J R , Shen B , Gryczysnki Z , et al . Biochem. Biophys. Res. Commun. , 2001 , 286 : 875 —879

  27. Fast Detection of Circulating Tumor Cells

  28. Could probably improve the intensity with Ag dimers Xu Wang, XimeiQian, Jonathan J. Beitler, et al.，Cancer Res 2011;71:1526-1532

  29. The end • Thanks for your listening!

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