Tunable Optical Transparency in Self-Assembled Three-Dimensional Polyhedral Graphene Oxide.
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.
Department of Electrical and Computer Engineering, University of Minnesota , Minneapolis, Minnesota 55455, United States.
Daeha
D
Joung
Princeton Institute for the Science and Technology of Materials, Princeton University , Princeton, New Jersey 08544, United States.
Tingyi
T
Gu
Department of Electrical and Computer Engineering, University of Minnesota , Minneapolis, Minnesota 55455, United States.
Jeong-Hyun
JH
Cho
2D materials; 3D microstructure; graphene oxide; origami; self-assembly