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

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posted on 12.09.2016, 00:00 by Daeha Joung, Tingyi Gu, Jeong-Hyun Cho
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.