Optimized hand fabricated AFM probes for simultaneous topographical and electrochemical tapping mode imaging

Raul D. Rodriguez, Agnès Anne, Edmond Cambril, Christophe Demaille

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In this work hybrid AFM-electrochemical (SECM) probes to be used in dynamic atomic force microscopy are presented. These nanosensors are hand fabricated from gold microwires using a simple benchtop method. They display proportions close to commercially available silicon and silicon nitride cantilevers giving comparable performance in terms of resolution and imaging stability. The remarkable characteristic of these hybrid nanosensors is that they allow the coupling of 3D imaging ability and versatility of atomic force microscopy with the power of electrochemical methods. Local measurement of electrochemical-activity of a test sample consisting of gold bands functionalized by redox-labeled nanometer-sized polyethylene glycol chains has been achieved with simultaneous imaging of the 3D surface topography at high resolution. These hybrid AFM-SECM tips are capable of sensing local electrochemical currents down to ~10. fA emphasizing the sensitivity and resolution of this technique.

Original languageEnglish
Pages (from-to)973-981
Number of pages9
JournalUltramicroscopy
Volume111
Issue number8
DOIs
Publication statusPublished - 1 Jul 2011
Externally publishedYes

Fingerprint

Nanosensors
atomic force microscopy
Imaging techniques
Gold
probes
Atomic force microscopy
Surface topography
Silicon
gold
Silicon nitride
Polyethylene glycols
versatility
silicon nitrides
glycols
polyethylenes
proportion
topography
sensitivity
high resolution
silicon

Keywords

  • AFM-SECM
  • Hand fabricated AFM probes
  • Hybrid AFM probes
  • Scanning electrochemical microscopy
  • Tapping mode imaging

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Instrumentation

Cite this

Optimized hand fabricated AFM probes for simultaneous topographical and electrochemical tapping mode imaging. / Rodriguez, Raul D.; Anne, Agnès; Cambril, Edmond; Demaille, Christophe.

In: Ultramicroscopy, Vol. 111, No. 8, 01.07.2011, p. 973-981.

Research output: Contribution to journalArticle

Rodriguez, Raul D. ; Anne, Agnès ; Cambril, Edmond ; Demaille, Christophe. / Optimized hand fabricated AFM probes for simultaneous topographical and electrochemical tapping mode imaging. In: Ultramicroscopy. 2011 ; Vol. 111, No. 8. pp. 973-981.
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