Tunable Optical Transparency in Self-Assembled Three-Dimensional Polyhedral Graphene Oxide

Daeha Joung, Tingyi Gu, Jeong Hyun Cho

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)9586-9594
Number of pages9
JournalACS nano
Issue number10
StatePublished - Oct 25 2016

Bibliographical note

Funding 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.

Publisher Copyright:
© 2016 American Chemical Society.

Copyright 2017 Elsevier B.V., All rights reserved.


  • 2D materials
  • 3D microstructure
  • graphene oxide
  • origami
  • self-assembly


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