Fabrication and characterization of nanopore-based electrodes with radii down to 2 nm

Diego Krapf; Meng Yue Wu; Ralph M.M. Smeets; Henny W. Zandbergen; Cees Dekker; Serge G. Lemay

doi:10.1021/nl052163x

Fabrication and characterization of nanopore-based electrodes with radii down to 2 nm

Diego Krapf, Meng Yue Wu, Ralph M.M. Smeets, Henny W. Zandbergen, Cees Dekker, Serge G. Lemay^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

127 Citations (Scopus)

Abstract

We report on the fabrication and characterization of gold nanoelectrodes with carefully controlled nanometer dimensions in a matrix of insulating silicon nitride. A focused electron beam was employed to drill nanopores in a thin silicon nitride membrane. The size and shape of the nanopores were studied with high-resolution transmission electron microscopy and electron-energy-loss two-dimensional maps. The pores were subsequently filled with gold, yielding conically shaped nanoelectrodes. The nanoelectrodes were examined by atomic and electrostatic force microscopy. Their applicability in electrochemistry was demonstrated by steady-state cyclic voltammetry. Pores with a radii down to 0.4 nm and electrodes with radii down to 2 nm are demonstrated.

Original language	English
Pages (from-to)	105-109
Number of pages	5
Journal	Nano letters
Volume	6
Issue number	1
DOIs	https://doi.org/10.1021/nl052163x
Publication status	Published - Jan 2006
Externally published	Yes

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title = "Fabrication and characterization of nanopore-based electrodes with radii down to 2 nm",

abstract = "We report on the fabrication and characterization of gold nanoelectrodes with carefully controlled nanometer dimensions in a matrix of insulating silicon nitride. A focused electron beam was employed to drill nanopores in a thin silicon nitride membrane. The size and shape of the nanopores were studied with high-resolution transmission electron microscopy and electron-energy-loss two-dimensional maps. The pores were subsequently filled with gold, yielding conically shaped nanoelectrodes. The nanoelectrodes were examined by atomic and electrostatic force microscopy. Their applicability in electrochemistry was demonstrated by steady-state cyclic voltammetry. Pores with a radii down to 0.4 nm and electrodes with radii down to 2 nm are demonstrated.",

author = "Diego Krapf and Wu, {Meng Yue} and Smeets, {Ralph M.M.} and Zandbergen, {Henny W.} and Cees Dekker and Lemay, {Serge G.}",

year = "2006",

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doi = "10.1021/nl052163x",

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T1 - Fabrication and characterization of nanopore-based electrodes with radii down to 2 nm

AU - Krapf, Diego

AU - Wu, Meng Yue

AU - Smeets, Ralph M.M.

AU - Zandbergen, Henny W.

AU - Dekker, Cees

AU - Lemay, Serge G.

PY - 2006/1

Y1 - 2006/1

N2 - We report on the fabrication and characterization of gold nanoelectrodes with carefully controlled nanometer dimensions in a matrix of insulating silicon nitride. A focused electron beam was employed to drill nanopores in a thin silicon nitride membrane. The size and shape of the nanopores were studied with high-resolution transmission electron microscopy and electron-energy-loss two-dimensional maps. The pores were subsequently filled with gold, yielding conically shaped nanoelectrodes. The nanoelectrodes were examined by atomic and electrostatic force microscopy. Their applicability in electrochemistry was demonstrated by steady-state cyclic voltammetry. Pores with a radii down to 0.4 nm and electrodes with radii down to 2 nm are demonstrated.

AB - We report on the fabrication and characterization of gold nanoelectrodes with carefully controlled nanometer dimensions in a matrix of insulating silicon nitride. A focused electron beam was employed to drill nanopores in a thin silicon nitride membrane. The size and shape of the nanopores were studied with high-resolution transmission electron microscopy and electron-energy-loss two-dimensional maps. The pores were subsequently filled with gold, yielding conically shaped nanoelectrodes. The nanoelectrodes were examined by atomic and electrostatic force microscopy. Their applicability in electrochemistry was demonstrated by steady-state cyclic voltammetry. Pores with a radii down to 0.4 nm and electrodes with radii down to 2 nm are demonstrated.

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VL - 6

SP - 105

EP - 109

JO - Nano letters

JF - Nano letters

IS - 1

ER -

Fabrication and characterization of nanopore-based electrodes with radii down to 2 nm

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