Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (01): 169-172.doi: 10.3866/PKU.WHXB20090130

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Synthesis and Surface Plasmonic Resonance of Stannum Nanocaps

LEI Xin-Xian; XIAO Gui-Na; MAN Shi-Qing; YANG Xing-Wang   

  1. Department of Physics, Jinan University, Guangzhou 510632; 2Institute of Nano-Chemistry, Jinan University, Guangzhou 510632
  • Received:2008-07-28 Revised:2008-09-26 Published:2008-12-31
  • Contact: MAN Shi-Qing E-mail:tsqman@jnu.edu.cn

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Abstract: Stannum nanocaps were prepared by evaporating Sn on self-assembled monolayer arrays of SiO2 nanoparticles. Surface morphologies, structure, and optical properties of composite nanoparticles were characterized and investigated using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction (XRD) and UV-Vis-NIR spectrophotometer. The results show that the composite nanoparticles are cap-shaped and surface plasmonic resonance absorption peaks move to the near-infrared region as the SiO2 diameter increases and Sn cap thickness increases.

Key words: Stannum nanocaps, Composite nanoparticles, Surface plasmonic resonance