Constrained, aqueous growth of three-dimensional single crystalline zinc oxide structures

Journal Article · Wed Jan 01 00:00:00 EST 2014 · APL Materials

DOI:https://doi.org/10.1063/1.4863075· OSTI ID:22269565

Joo, John H.; Hu, Evelyn L. ^[1]

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1. School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States)

We study low temperature (90 °C) aqueous growth of single crystal zinc oxide structures through patterned PMMA molds of different sizes, shapes, and orientations. We demonstrate the ability to create 3D shapes with smooth vertical sidewalls. Although the unconstrained growth is influenced by the hexagonal geometry of the underlying crystal structure, the ZnO is shown to conform exactly to any shape patterned. Using electron backscatter diffraction and scanning electron microscopy we show that the mold orientation, in conjunction with control of the growth rates of the c and m planes of the ZnO, is crucial in determining the final structure shape.

• OSTI ID: 22269565
• Journal Information: APL Materials, Vol. 2, Issue 1; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2166-532X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CONTROL
CRYSTAL STRUCTURE
DIFFRACTION
MONOCRYSTALS
PMMA
SCANNING ELECTRON MICROSCOPY
ZINC OXIDES