Silver Nanocrystals with Concave Surfaces and Their Optical and Surface-Enhanced Raman Scattering Properties

Authors

  • Xiaohu Xia,

    1. Department of Biomedical Engineering, Washington University, St. Louis, MO 63130 (USA)
    2. Engineering Research Center of Molecular Diagnostics, School of Life Sciences, Xiamen University, Xiamen, Fujian 361005 (P.R. China)
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    • These authors contributed equally to this work.

  • Dr. Jie Zeng,

    1. Department of Biomedical Engineering, Washington University, St. Louis, MO 63130 (USA)
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    • These authors contributed equally to this work.

  • Brenden McDearmon,

    1. Department of Biomedical Engineering, Washington University, St. Louis, MO 63130 (USA)
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  • Yiqun Zheng,

    1. Department of Biomedical Engineering, Washington University, St. Louis, MO 63130 (USA)
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  • Dr. Qingge Li,

    1. Engineering Research Center of Molecular Diagnostics, School of Life Sciences, Xiamen University, Xiamen, Fujian 361005 (P.R. China)
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  • Prof. Younan Xia

    Corresponding author
    1. Department of Biomedical Engineering, Washington University, St. Louis, MO 63130 (USA)
    • Department of Biomedical Engineering, Washington University, St. Louis, MO 63130 (USA)
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  • This work was supported by research grants from the NSF (DMR, 0804088 and 1104616) and startup funds from the Washington University in St. Louis. As a jointly supervised Ph.D. student from Xiamen University, X.X. was also supported by a Fellowship from the China Scholarship Council. Part of the research was performed at the Nano Research Facility, a member of the National Nanotechnology Infrastructure Network (NNIN), which is funded by the NSF under award no. ECS-0335765.

Abstract

original image

Shaped and dimpled: Silver nanocrystals enclosed by concave surfaces and thus high-index facets have been prepared by simply controlling the growth habit of Ag cubic seeds. Four types of concave nanocrystals, including octahedron, cube, octapod, and trisoctahedron, were obtained (see picture).

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