Formation of single-electron-transistors using self-assembly of nanoparticle chains

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We present a single-step template-free self-assembly method for constructing 1D-chains and 1D-networks of Au-nanoparticles. The chains are formed by simply increasing the ion concentration of nanoparticle solution so that the attractive van der waals force prevails over the repulsive Coulomb interaction. A combination of this method and the previously developed charge trapping technique allows us to place the 1D-chains/networks at designed locations. Further, the nanoparticle structures are stable enough to withstand the subsequent e-beam lithographic processes for formation of nanoparticle-based electronics such as a single electron transistor. Prominent Coulomb oscillation was observed at temperatures as high as 120 K.

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This research was funded by the National Science Council Nos. NSC 98-2311-B-027-001-MY3, NSC 97-2112-M-024-002-MY3, NSC 97-2627-M-001 -002 and by National Taipei University of Technology. Technical support from NanoCore, the Core Facilities for Nanoscience and Nanotechnology at Academia Sinica, is acknowledged.

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Correspondence to Li-Chu Tsai or Hung-Yi Lin.

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Tsai, L., Cheng, I., Tu, M. et al. Formation of single-electron-transistors using self-assembly of nanoparticle chains. J Nanopart Res 12, 2859–2864 (2010) doi:10.1007/s11051-010-9873-x

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  • Self-assembly
  • Single electron transistor
  • Nanoparticle
  • Nanoelectronics