Gold Nanorods: Watching Single Gold Nanorods Grow (Small 9/2012)

Authors

  • Zhongqing Wei,

    Corresponding author
    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, The Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China
    Current affiliation:
    1. Z.W. and H.Q. contributed equally to this work.
    • CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, The Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China.
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  • Hua Qi,

    1. Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, 29B Zhongguancun East Road, Beijing 100190, China
    Current affiliation:
    1. Z.W. and H.Q. contributed equally to this work.
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  • Min Li,

    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, The Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China
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  • Bochong Tang,

    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, The Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China
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  • Zhengzheng Zhang,

    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, The Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China
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  • Ruiling Han,

    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, The Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China
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  • Jiaojiao Wang,

    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, The Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China
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  • Yuliang Zhao

    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, The Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China
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Abstract

original image

The cover picture, captured by atomic force microscopy, shows the evolution of two single-crystalline gold nanorods as growth time progresses. The gold nanorods are grown directly on silicon surfaces, to which gold seed particles of ca. 4 nm diameters had been previously linked via covalent bonding. The growth propagation of the nanorods is monitored by precisely measuring their 3D size, and their growth kinetics is then derived from these direct measurements rather than from statistical analyses as in other techniques. The quantitative study presented here represents an important approach toward gaining a better understanding of the seed-mediated growth mechanism of gold nanorods using a straightforward scanning probe microscopy method, which may ultimately lead to improved gold nanorod synthesis, controllable surface growth, and aligned nanorod array. For more information, please read the Communication “Watching Single Gold Nanorods Grow” by Z. Wei and co-workers, beginning on page 1331.

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