The origami-like self-folding process is an intellectually stimulating technique for realizing three-dimensional (3D) polyhedral free-standing graphene oxide (GO) structures. This technique allows for easy control of size, shape, and thickness of GO membranes, which in turn permits fabrication of free-standing 3D microscale polyhedral GO structures. Unlike 2D GO sheets, the 3D polyhedral free-standing GO shows a distinct optical switching behavior, resulting from a combination of the geometrical effect of the 3D hollow structure and the water-permeable multilayered GO membrane that affects the optical paths.
Bibliographical noteFunding Information:
This material is based upon work supported by a start-up fund at the University of Minnesota, Twin Cities, an NSF CAREER Award (CMMI-1454293), and an NSF fund (EEC-0540832) provided to T.G. Parts of this work were carried out in the Characterization Facility, University of Minnesota, a member of the NSF-funded Materials Research Facilities Network (www.mrfn.org) via the MRSEC program.
© 2016 American Chemical Society.
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- 2D materials
- 3D microstructure
- graphene oxide