An Island in the Sea: the Unseen Graphene

This video explains the process of identifying graphene from graphite flakes using the "Scotch tape technique," the Optical Technique, and Confocal Raman Spectroscopy.


******Citations*********
[Pictures]
graphene: math.ucr.edu/home/baez/week262.html
graphite flakes: http://www.graftechaet.com/GRAFGUARD/GRAFGUARD-Products/Expandable-Graphite-F...
Relation of graphene to graphite: http://en.wikipedia.org/wiki/File:Graphene-graphite_relation.png
carbon nanotube: http://mrbarlow.files.wordpress.com/2009/04/carbon-nanotube.jpg
carbon: www.chem4kids.com/files/elements/006_shells.html
Graphs:
"Raman Spectroscopy and Imaging of Graphene" by Zhenhua Ni, Yingying Wang, Ting Yu, and Zexiang Shen from School of Physical and mathematical sciences, Nanyang Technological University, Singapore.

[Songs]
Element Song - Tom Lehrer
He's a Pirate - Hans Zimmer
Star Wars theme - John Williams
Eye of the Tiger - Survivor
Boom boom pow - Black Eyed Peas

Category:

Education

Tags:

• Graphene
• raman
• spectroscopy
• graphite
• optical
• scotch
• tape
• technique
• laser
• silicon
• wafer

[clarification007]

Now it will need a Graphene Valley! Instead of Silicon

[soaffb1337]

Benzene is C6H6 which makes it a hydrocarbon...not just carbon, graphene is just a hexagon of carbon surrounded by hexagons of carbon

[physicsbugga]

Nice, a WiTec alpha 300, my favorite machine!

[sirfreakman]

First of all, congratulations, it's a great video.

If fact everything is very clear.

As far as I know in Raman spectroscopy, you can use 785 nm (red laser) and 532 nm (green laser, the one you guys use).

Have you tried the 785 nm laser with the graphene? If so on which bands does the bands appear.

Also have you tried to have a spectra of the graphene, in Medium Infrarred, Near Infrarred or Far Infrarred?

Thanks in advance for your answer.

[raptorculiacan]

@ianhallam because you're an amateur scientist that wont get any respect without proper goggles!

[DrYenisun]

excellent!

[Shalek]

tha\t was pretty cool.

[leo8xbn]

very well

[flamencoprof]

Nice, straightforward facts with a little bit of ra-ra for science. I had heard of the "Scotch tape technique" but this made it clear how it is done. Thanks!