Single quantum dot (QD) manipulation on nanowire using dielectrophoretic (DEP) force

J. Kim, S. Y. Lee, J. K.F. Suh, Jung ho Park, H. J. Shin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Au nanowires of 100 nm, 200nm and 400 nm widths with micro scale Au electrode were fabricated as electrodes to apply high electric field gradient for strong DEP force within the nanometer range. Au nanowires were fabricated on a silicon dioxide (SiO2) using lift-off process after e-beam lithography and e-beam evaporation. E-beam resister (ER) was patterned and a 50 nm thick Au layer. Photo resister (PR) was patterned to make Au microelectrode and did lift-off process. The Au nanowires with microelectrode were covered with SiO2 layer deposited with PECVD resulting in 1 um thick. Opened end of gold nanowires, the target surface for QD immobilization, were formed using etching processes. Single QD immobilization on the nanowire end-facet was accomplished through positive DEP force. Sine wave of 8 Vpp intensity and 3 MHz frequency was applied and it induced electric field of 108 V/m intensity and electric field gradient around Au nanowire to make strong positive DEP. Optical analysis confirmed the attachment of single QD on the nanowire. A single 25 nm diameter QD was manipulated on 100 nm, 200 nm and 400 nm width nanowires when 8 Vpp, 3 MHz sine wave was applied.

Original languageEnglish
Title of host publicationAdvanced Fabrication Technologies for Micro/Nano Optics and Photonics IV
Volume7927
DOIs
Publication statusPublished - 2011 Apr 11
EventAdvanced Fabrication Technologies for Micro/Nano Optics and Photonics IV - San Francisco, CA, United States
Duration: 2011 Jan 252011 Jan 26

Other

OtherAdvanced Fabrication Technologies for Micro/Nano Optics and Photonics IV
CountryUnited States
CitySan Francisco, CA
Period11/1/2511/1/26

Keywords

  • Dielectrophoretic (DEP) force
  • Metal nanowire
  • Nano-particle manipulation
  • Quantum dot
  • Single photon source
  • Surface plasmon resonance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Kim, J., Lee, S. Y., Suh, J. K. F., Park, J. H., & Shin, H. J. (2011). Single quantum dot (QD) manipulation on nanowire using dielectrophoretic (DEP) force. In Advanced Fabrication Technologies for Micro/Nano Optics and Photonics IV (Vol. 7927). [79270V] https://doi.org/10.1117/12.873504