High-yield dielectrophoretic deposition and ion sensitivity of graphene

Pengfei Li, Nan Lei, Jie Xu, Wei Xue

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

1 Scopus citations

Abstract

Here we report a simple but effective approach to deposit graphene on silicon with dielectrophoresis. With a comb-shaped electrode design, graphene sheets can be captured between electrode pairs. The dielectrophoresis has proven effective in depositing a large-scale array of graphene sheets on desired locations. The dielectrophoretically deposited graphene demonstrates high sensitivity towards hydrogen ion concentration in an aqueous environment. The resistance of graphene is inversely proportional to the pH value of the solutions in the range of 5 to 9. The pH sensitivity of graphene is caused by the electrolyte-dependent gating effects and the creation of an electrical double layer at the liquid-graphene interface. The high-precision, high-yield dielectrophoretic deposition method provides an effective approach for large-scale fabrication and integration of future graphene-based nanoelectronic devices.

Original languageEnglish (US)
Title of host publication2011 11th IEEE International Conference on Nanotechnology, NANO 2011
Pages1327-1330
Number of pages4
DOIs
StatePublished - Dec 1 2011
Event2011 11th IEEE International Conference on Nanotechnology, NANO 2011 - Portland, OR, United States
Duration: Aug 15 2011Aug 19 2011

Publication series

NameProceedings of the IEEE Conference on Nanotechnology
ISSN (Print)1944-9399
ISSN (Electronic)1944-9380

Other

Other2011 11th IEEE International Conference on Nanotechnology, NANO 2011
CountryUnited States
CityPortland, OR
Period8/15/118/19/11

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Electrical and Electronic Engineering
  • Materials Chemistry
  • Condensed Matter Physics

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  • Cite this

    Li, P., Lei, N., Xu, J., & Xue, W. (2011). High-yield dielectrophoretic deposition and ion sensitivity of graphene. In 2011 11th IEEE International Conference on Nanotechnology, NANO 2011 (pp. 1327-1330). [6144331] (Proceedings of the IEEE Conference on Nanotechnology). https://doi.org/10.1109/NANO.2011.6144331