Ret Symposium 2008

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Draft of my presentation of summer RET experience at Notre Dame working with Dr. Grace Xing in the Electrical Engineering department.

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Ret Symposium 2008

  1. 1. ISFET Devices and Connections to AP Chemistry R esearch E xperience for T eachers Symposium 2008 Phillip Cook
  2. 2. MESFET (top view) ISFET (side view) Source Drain Gate F ield E ffect T ransistors ( FET s)
  3. 3. Source Gate B rief F ET H istory
  4. 4. http://www.sentron.nl/nieuw/typo3temp/71a060e194.jpg C hemical S ensors
  5. 5. GaAs
  6. 6. B and G ap
  7. 7. http://www.sentron.nl/nieuw/typo3temp/71a060e194.jpg I SFET S ensor C omponents
  8. 8. I SFET F abrication n- GaAs p+ GaAs
  9. 9. C onstructing the R eference E lectrode
  10. 10. E xperimental S et-up
  11. 11. E xperimental S et-up
  12. 12. E xperimental S et-up
  13. 13. E xperimental S et-up
  14. 14. E xperimental S et-up
  15. 15. R esults
  16. 16. R esults pH 10 pH 4 pH 9 pH 7
  17. 17. Conducting Channel (150 nm n- GaAs) Source Ag/AgCl Reference Electrode (Gate) Substrate (p+ GaAs)
  18. 18. C lassroom C onnections
  19. 19. C lassroom C onnections
  20. 20. For more information on this RET project: Check out my blog: http://cookp.edublogs.org/retnd Contact Info Phillip Cook Email : [email_address] Twitter ID : cookp Blog : cookp.edublogs.org Special thanks to: Dr. Grace Xing Chuanxin Lian Rachel Rasmussen Xing Research Group

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