1. Towards Nanowire Circuitry
Lori-Anne Ashwood
Physics Department
Mount Holyoke College

2. 3 Part Process
• Nanowire Fabrication
• Holographic Optical Trapping
• Connection by Photodeposition
Make It
Place It
Connect It

3. Making Nanowires
Argon
flow
Sample
mixture @
900°C
Substrate boat
@ 600°C
To vacuum
Make It

4. Making Nanowires
Argon
flow
Sample
mixture @
900°C
Substrate boat
@ 600°C
To vacuum
Make It

5. vapors
Making Nanowires
Argon
flow
Sample
mixture @
900°C
Substrate boat
@ 600°C
To vacuum
Make It

6. vapors
Making Nanowires
Argon
flow
Sample
mixture @
900°C
Substrate boat
@ 600°C
To vacuum
Make It

7. Nanowires Formed by Self Assembly
SEM image of zinc oxide nanowires made with
gold catalyst projecting out off the surface of a
silicon substrate.
SEM image of self assembled zinc
oxide semiconductor nanowires
made with germanium oxide
catalyst on a silicon substrate.
Make It

8. Optical Trapping
• The use of light in the form of a focused
laser beam to manipulate microscopic
objects.
Place It

9. Schematic of Simple Optical Trapping Set-Up (Laser Tweezers)Microscope
computer
LASER
Place It

10. http://www.irtc.org/ftp/pub/old-competition/competition-Jan-95/ http://www.philohome.com/towercrane/tc.htm
Holographic Optical Trapping
Place It

11. Schematic of Simple Optical Trapping Set-Up (Laser Tweezers)Microscope
computer
LASER
Place It
SLM

12. Holograms
Hologram Resultant Configuration
Place It

13. Holograms
Courtesy of Eric Dufresne
Place It

14. Connecting using Photodeposition
10 µm 10 µm
Connect It

15. Next Step
+ +
http://ham-shack.com/components.html
=
http://www.turbosquid.com/
Make It Connect ItPlace It

16. Thanks to:
• Professor Ward Lopes
• Professor Katherine Aidala
• Members of the Aidala Lab
• Leonard McEachern
• Elisa Frankel
• Marian Rice
Funded by: Howard Hughes Medical Institute