Observation of spontaneous pattern with six-fold symmetry in disk-shaped ZnO complex microstructures |
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| Authors: | LW Yang YJ Gao XL Wu YM Yang GS Huang ZY Zhang PK Chu |
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| Institution: | (1) Faculty of Materials and Optoelectronic Physics, Xiangtan University, Xiangtan, Hunan, 411105, P.R. China;(2) National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China;(3) Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong, P.R. China |
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| Abstract: | Using a simple vapor phase transport technique, we have fabricated unique complex disk-shaped ZnO microstructures comprising
a small disk coaxially grown on a large one and observed spatially perfect six-fold symmetric patterns. The observed results
can be explained based on the spontaneous nanoindentation (NI) effect under the geometric constraints and the explanation
can be extended to fathom the growth mechanism of other highly symmetrical ZnO nanostructures. Our results indicate that NI
not only can elucidate the mechanical properties of surfaces and thin films but also is an effective approach to fabricate
ordered nanostructures with high precision on the location of the building blocks.
PACS 81.16.Rf; 81.07.-b; 81.05.Dz |
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