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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
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Interfacial Electrochemical Methods: Overview01:06

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Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current passing...
Amperometry: Overview01:10

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Amperometry is a technique commonly used to measure the concentration of specific analytes in a solution by monitoring the electric current generated during an electrochemical reaction. It involves applying a constant potential between a working electrode and a reference electrode to measure the resulting current, which is proportional to the concentration of the analyte. The Clark oxygen electrode operates based on this principle of amperometry. It consists of a cathode and an anode enclosed...

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Updated: May 13, 2026

Probing Surface Electrochemical Activity of Nanomaterials using a Hybrid Atomic Force Microscope-Scanning Electrochemical Microscope (AFM-SECM)
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Electrochemical current-sensing atomic force microscopy in conductive solutions.

Ilya V Pobelov1, Miklós Mohos, Koji Yoshida

  • 1Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland. ilya.pobelov@iac.unibe.ch

Nanotechnology
|March 2, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed insulated atomic force microscopy probes with gold tips to simultaneously measure force and electrical current in solutions. These bifunctional probes enable advanced imaging and spectroscopy techniques for electrochemical studies.

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Area of Science:

  • Nanotechnology
  • Electrochemistry
  • Surface Science

Background:

  • Atomic Force Microscopy (AFM) is a powerful tool for nanoscale imaging and force measurements.
  • Simultaneous measurement of physical forces and electrical properties at the nanoscale is crucial for understanding electrochemical processes.
  • Existing AFM probes often lack the integrated conductivity for simultaneous electrochemical sensing.

Purpose of the Study:

  • To fabricate and characterize bifunctional AFM probes capable of simultaneous force and current sensing.
  • To demonstrate the utility of these probes in electrochemical environments.
  • To enable advanced nanoscale imaging and spectroscopy under electrochemical potential control.

Main Methods:

  • Fabrication of insulated AFM probes with integrated gold conductive tips.
  • Utilizing the probes as combined force and current sensors in electrolyte solutions.
  • Applying electrochemical potential control during measurements.
  • Performing current-sensing imaging, force-current distance spectroscopy, and scanning electrochemical microscopy.

Main Results:

  • Successful fabrication of bifunctional AFM probes.
  • Demonstration of simultaneous force and current detection in electrolyte solutions.
  • Successful implementation in current-sensing imaging and spectroscopy.
  • Validation of probe performance in scanning electrochemical microscopy.

Conclusions:

  • The developed bifunctional AFM probes offer a versatile platform for nanoscale electrochemical analysis.
  • These probes enhance the capabilities of AFM for studying interfacial phenomena in electrochemical systems.
  • The technology opens new avenues for high-resolution electrochemical characterization.