Quantum dots (QD) are semiconductors made via several possible routes. John Ashmead discusses how they are made, their properties and their applications in research.

1. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Quantum Dots
John
Ashmead

2. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
What are Quantum Dots?

3. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
What are Quantum Dots?

4. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Size
Matters

5. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016

6. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
One source of light,
multiple colors

7. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Blinking QDots!

8. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Heavy Metal

9. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Heavy Metal

10. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Square Well
http://what-when-how.com/nanoscience-and-nanotechnology/quantum-dots-inelastic-light-
scattering-from-electronic-excitations-part-1-nanotechnology/

11. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Band gap

12. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Rise

13. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
And Fall

14. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Lithography

15. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Epitaxy
In self-assembly of QDs,
one makes use of an island
formation in epitaxial
growth. The effect is
similar to the formation of
water droplets on a well-
phished surface.

16. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Colloidal production

17. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Colloidal production

18. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Stenotrophomonas
maltophilia ➫ QDots

19. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Who knew?

20. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Who knew?

21. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
http://www.gartner.com/newsroom/id/3114217
Universal Curve of
Hype!

22. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
QD as Fast as Possible

23. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
QD as Fast as Possible

24. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Solar panels
http://www.dailytech.com/New+Solar+Cell+Gives+Its+110+Percent+in+Efficiency/
article23548.htm

25. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
the Quantum Dot
(QD)
spectrometer
device is printing
QD filters — a
key fabrication
step.
…
The optical
structure — QD
filters — are
generated by
printing liquid
droplets.

26. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Mouse Intestines at
Night

27. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Slightly dotty Mice

28. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Probes

29. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Little tiny body ships

30. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
QDs changing medicine

31. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
QDs changing medicine

32. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Labeling Tumors

33. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Labeling Tumors

34. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Entanglement

35. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Quantum Computing

36. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Maxwell’s Demon

37. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Maxwell’s Demon

38. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
“There’s Plenty of Room at the
Bottom”
- Richard P. Feynman

39. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
How 2 make QDs at Home

40. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
How 2 make QDs at Home

41. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
What can we brew up
with QDots?

42. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
What can we brew up
with QDots?
• Sweet spot between atoms &
macroscopic structures

43. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
What can we brew up
with QDots?
• Sweet spot between atoms &
macroscopic structures
• Quantum effects seen

44. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
What can we brew up
with QDots?
• Sweet spot between atoms &
macroscopic structures
• Quantum effects seen
• But relatively independent of
specifics

45. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
What can we brew up
with QDots?
• Sweet spot between atoms &
macroscopic structures
• Quantum effects seen
• But relatively independent of
specifics
• Lots of potential for direct use

46. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
What can we brew up
with QDots?
• Sweet spot between atoms &
macroscopic structures
• Quantum effects seen
• But relatively independent of
specifics
• Lots of potential for direct use
• But real leverage may be in
connections

47. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
A steal at $765.38!(+ Shipping)

48. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Science Writer
Needed!

49. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Science Writer
Needed!
• Look for Nanotech

50. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Science Writer
Needed!
• Look for Nanotech
• Wikipedia article not
that useful — techy

51. http://timeandquantummechanics.comQuantum Dots - Balticon, May 28th, 2016
Science Writer
Needed!
• Look for Nanotech
• Wikipedia article not
that useful — techy
• Lots of stuff on
youtube (Ashmead
Quantum Dots - 96
videos)