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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.

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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Transcript

  • 1. ISFET Devices and Connections to AP Chemistry R esearch E xperience for T eachers Symposium 2008 Phillip Cook
  • 2. MESFET (top view) ISFET (side view) Source Drain Gate F ield E ffect T ransistors ( FET s)
  • 3. Source Gate B rief F ET H istory
  • 4. http://www.sentron.nl/nieuw/typo3temp/71a060e194.jpg C hemical S ensors
  • 5. GaAs
  • 6. B and G ap
  • 7. http://www.sentron.nl/nieuw/typo3temp/71a060e194.jpg I SFET S ensor C omponents
  • 8. I SFET F abrication n- GaAs p+ GaAs
  • 9. C onstructing the R eference E lectrode
  • 10. E xperimental S et-up
  • 11. E xperimental S et-up
  • 12. E xperimental S et-up
  • 13. E xperimental S et-up
  • 14. E xperimental S et-up
  • 15. R esults
  • 16. R esults pH 10 pH 4 pH 9 pH 7
  • 17. Conducting Channel (150 nm n- GaAs) Source Ag/AgCl Reference Electrode (Gate) Substrate (p+ GaAs)
  • 18. C lassroom C onnections
  • 19. C lassroom C onnections
  • 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