Morphology and Fluctuations of Suspended Graphene Oxide Sheets

Matthew Gratale; Daniel T. N. Chen; Zexin Zhang; Zhengtang Luo; Erik Smith; Peter Collings; Alan T. Johnson; Arjun Yodh

Morphology and Fluctuations of Suspended Graphene Oxide Sheets

POSTER

Abstract

We study the morphology and fluctuations of suspended graphene oxide sheets by phase contrast and confocal microscopy. The morphology of graphene oxide sheets is manipulated by changing solvent pH. Labeling the graphene oxide sheets with quantum dots permits further study of morphology, as well as the possible study of the fluctuations, through the use of confocal microscopy. The direct imaging studies of the morphology are complimented by light scattering studies, conventionally used to characterize morphology of colloidal membranes. These direct imaging studies can lead to measurements of the mechanical properties of graphene oxide in solution.

^*This work is supported by NSF grant DMR-080488 (AGY) and MRSEC grant DMR-0520020.

Authors

Matthew Gratale
- Department of Physics and Astronomy, University of Pennsylvania
Daniel T. N. Chen
- Department of Physics and Astronomy, University of Pennsylvania
Zexin Zhang
- University of Pennsylvania
- Department of Physics and Astronomy, University of Pennsylvania
Zhengtang Luo
- University of Pennsylvania
- Department of Physics and Astronomy, University of Pennsylvania
Erik Smith
- Department of Physics and Astronomy, Swarthmore College
Peter Collings
- Department of Physics and Astronomy, Swarthmore College
Alan T. Johnson
- University of Pennsylvania
- U. Pennsylvania
- Department of Physics and Astronomy, University of Pennsylvania
Arjun Yodh
- University of Pennsylvania
- Department of Physics and Astronomy, University of Pennsylvania