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Patrick Johnson

Department of Chemical Engineering

1000 E. University Ave.

Laramie, WY 82071

Phone: (307) 766-6524

Email: pjohns27@uwyo.edu

Ultrahigh Temperature Annealing and Laser Irradiation: A Potential Route to Producing Valuable Electronic Materials from Coal

April 25, 2018
Mike working

Michael A. Seas

M.S., Department of Chemical Engineering, May 2018

Date: Wednesday, April 25, 2018

Time: 12pm

Location: EN 3076

Recent work seeking to produce simpler, more efficient ways of producing graphene has generated widespread interest in new methods for generating graphene/graphite oxide (GO). Graphene/graphite oxide is an oxidized form of graphene and graphite, where upon heating, can be reduced back to its graphene/graphite state. When dispersed into solution, GO can be utilized as a sprayable ink to generate large area thin films quickly. Recent work has shown that thin graphene oxide films can be quickly patterned via the use of a laser to produce regions of conductive material orders of magnitudes higher than the insulating carbon matrix it is patterned in. More broadly, this process utilizes a thermodynamically driven process that may be extended to various carbon species. In this work, I present an analysis of the thermodynamically driven process as it occurs in powdered samples of various carbon species. I demonstrate that large area carbon thin films can be generated from these same species with relevant transmission properties. I then show that it is possible to produce laser graphitized regions of graphene oxide thin films of various thicknesses. Finally, I attempt to make suggestions about what must be done in order for this process to gain industrial relevance.

Contact Us

Patrick Johnson

Department of Chemical Engineering

1000 E. University Ave.

Laramie, WY 82071

Phone: (307) 766-6524

Email: pjohns27@uwyo.edu

1000 E. University Ave. Laramie, WY 82071
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