Control of Interdot Space and Dot Size in a Two-Dimensional Gold Nanodot Array.

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  • Huang Shujuan
    Department of Electrical Engineering, Hiroshima University, 1–4–1 Kagamiyama, Higashi–Hiroshima 739–8527, Japan
  • Tsutsui Gen
    Department of Electrical Engineering, Hiroshima University, 1–4–1 Kagamiyama, Higashi–Hiroshima 739–8527, Japan
  • Sakaue Hiroyuki
    Department of Electrical Engineering, Hiroshima University, 1–4–1 Kagamiyama, Higashi–Hiroshima 739–8527, Japan
  • Shingubara Shoso
    Department of Electrical Engineering, Hiroshima University, 1–4–1 Kagamiyama, Higashi–Hiroshima 739–8527, Japan
  • Takahagi Takayuki
    Department of Electrical Engineering, Hiroshima University, 1–4–1 Kagamiyama, Higashi–Hiroshima 739–8527, Japan

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Abstract

Experimental studies on the control of the interdot space and the dot size in a self-organized two-dimensional array of gold colloidal nanoparticles encapsulated by alkanethiol are presented. We succeeded in fabricating an ordered close-packed monolayer of gold nanodots of 5 nm as well as 10 nm in diameter. In addition, by changing the length of the alkanethiol molecules, close-packed gold nanodot monolayers with different interdot spaces were formed. The results of this study indicate a linear relationship between the interdot space and the length of the alkanethiol molecule, which demonstrates that the interdot space can be easily controlled by altering alkanethiol molecules.

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