Controllable Synthesis and Growth Model of Amorphous Silicon Nanotubes with Periodically Dome-Shaped Interiors

Authors

  • C. Li,

    1. State Key Lab for Physical Chemistry of Solid Surfaces, Department of Chemistry, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
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  • Z. T. Liu,

    1. State Key Lab for Physical Chemistry of Solid Surfaces, Department of Chemistry, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
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  • C. Gu,

    1. State Key Lab for Physical Chemistry of Solid Surfaces, Department of Chemistry, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
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  • X. Xu,

    1. State Key Lab for Physical Chemistry of Solid Surfaces, Department of Chemistry, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
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  • Y. Yang

    1. State Key Lab for Physical Chemistry of Solid Surfaces, Department of Chemistry, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China
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  • Financial support from the National Natural Science Foundation of China under the Outstanding Young Researcher scheme (Grant Nos. 29 925 310, 20 021 002) and the Ministry of Science and Technology of China (Grant No. 2001CB10 506) are gratefully acknowledged.

Abstract

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Amorphous silicon nanotubes with periodically aligned dome-shaped interiors (see Figure) are fabricated by chemical vapor deposition using a gold catalyst. As-grown materials have a length of several tens of micrometers and diameters of 70–100 nm. The inner shape and size of the interiors in the products may be tuned by controlling the silane flow rate, producing structures ranging from nanowires to tubular structures. A growth model based on surface tension is proposed.

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