| Bismuth spheres grown in self-nested cavities in a silicon wafer. | |
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MedLine Citation:
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PMID: 16248674 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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We have developed a one-step, hydrofluoric acid-free hydrothermal etching method that not only produces bismuth nano/micrometer-sized spheres but also prepares porous silicon with vertical holes. By controlling the heating temperature and time, nanoscale vertical-channeled porous silicon can be received. Our result indicated that the Bi clusters were formed first on the wafer surface. Then the etching of the Bi to the wafer creates the holes. Later, the Bi spheres went into the holes and expedited the etching process. A formation mechanism and chemical process have been proposed on the basis of experimental data. This simple chemistry approach may be of great scientific and technological importance for preparing porous silicon wafer. |
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Authors:
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Hong Liu; Zhong Lin Wang |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the American Chemical Society Volume: 127 ISSN: 0002-7863 ISO Abbreviation: J. Am. Chem. Soc. Publication Date: 2005 Nov |
Date Detail:
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Created Date: 2005-10-26 Completed Date: 2006-02-16 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503056 Medline TA: J Am Chem Soc Country: United States |
Other Details:
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Languages: eng Pagination: 15322-6 Citation Subset: - |
Affiliation:
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State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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