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Design for AFM demonstration

Design for AFM demonstration. Kevin D. McCarthy 9/28/05. What is AFM and why is it so clever?. Atomic force microscope. AFM: A tomic F orce M icroscope. laser. photodetector. k ≈ 0.1 N/m. Atomic force microscope, deflected. AFM: A tomic F orce M icroscope. laser. photodetector.

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Design for AFM demonstration

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  1. Design for AFM demonstration Kevin D. McCarthy 9/28/05

  2. What is AFM and why is it so clever?

  3. Atomic force microscope AFM: AtomicForce Microscope laser photodetector k ≈ 0.1 N/m

  4. Atomic force microscope, deflected AFM: AtomicForce Microscope laser photodetector k ≈ 0.1 N/m

  5. How it traces surface… z AFM: AtomicForce Microscope Feedback loop

  6. AFM: AtomicForce Microscope Vpiezo x

  7. AFM: AtomicForce Microscope Vpiezo x

  8. AFM: AtomicForce Microscope Vpiezo x

  9. AFM: AtomicForce Microscope Vpiezo x

  10. AFM: AtomicForce Microscope Vpiezo x

  11. AFM: AtomicForce Microscope Vpiezo x

  12. AFM: AtomicForce Microscope Vpiezo x

  13. AFM: AtomicForce Microscope Vpiezo x

  14. AFM: AtomicForce Microscope Vpiezo x

  15. AFM: AtomicForce Microscope Vpiezo x

  16. AFM: AtomicForce Microscope Vpiezo x

  17. AFM: AtomicForce Microscope Vpiezo x

  18. AFM: AtomicForce Microscope Vpiezo x

  19. AFM: AtomicForce Microscope Vpiezo x

  20. AFM: AtomicForce Microscope Vpiezo x

  21. AFM: AtomicForce Microscope Vpiezo x

  22. AFM: AtomicForce Microscope Vpiezo x

  23. AFM: AtomicForce Microscope Vpiezo x

  24. AFM: AtomicForce Microscope Vpiezo x

  25. AFM: AtomicForce Microscope Vpiezo x

  26. AFM: AtomicForce Microscope Vpiezo x

  27. AFM: AtomicForce Microscope Vpiezo x

  28. AFM: AtomicForce Microscope Vpiezo x

  29. AFM: AtomicForce Microscope Vpiezo x

  30. AFM: AtomicForce Microscope Vpiezo x

  31. AFM: AtomicForce Microscope Vpiezo x

  32. AFM: AtomicForce Microscope Vpiezo x

  33. AFM: AtomicForce Microscope Vpiezo x

  34. AFM: AtomicForce Microscope Vpiezo x

  35. photodetector Optical lever’s sensitivity means nN forces can be controllably exerted… laser k ≈ 0.1 N/m

  36. Design for class-room scale demo of AFM imaging mechanism… “photo-detector” screen Z axis motion… • Wheeled assembly can be rolled over books or other ~1 inch obstacles, while operator tries to maintain dot position on photo-detector screen. • An assistant can be continuously recording (strip-chart style) the ‘z piezo’ reading vs. x (horizontal position) Laser pointer mirror

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