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Related Experiment Videos

A versatile multipurpose scanning probe microscope.

E Cefalì1, S Patanè, P G Gucciardi

  • 1INFM, Università di Messina, Salita Sperone 31, I-98166 Messina, Italy.

Journal of Microscopy
|June 6, 2003
PubMed
Summary
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A novel scanning probe microscope combines atomic force, near-field optical, and scanning tunneling microscopy modes. This advanced instrument achieves 130 nm resolution for material discrimination using electrical and optical imaging.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Microscopy

Background:

  • Scanning probe microscopy (SPM) techniques offer high-resolution surface analysis.
  • Simultaneous multi-modal SPM can provide complementary information for complex sample characterization.
  • Integrating different SPM modes into a single instrument presents technical challenges.

Purpose of the Study:

  • To develop a combined scanning probe microscope integrating atomic force microscopy (AFM), scattering near-field optical microscopy (SNOM), and scanning tunneling microscopy (STM).
  • To demonstrate the simultaneous operation of these multiple SPM modes on conductive samples.
  • To evaluate the instrument's performance in material discrimination and lateral resolution.

Main Methods:

  • Development of a combined SPM instrument based on a commercial optical microscope.

Related Experiment Videos

  • Utilized etched tungsten tips and a tuning fork detection system for precise tip/sample distance control.
  • Simultaneous operation of non-contact/tapping mode AFM, SNOM, and STM.

    • Main Results:

    • The developed instrument successfully integrated AFM, SNOM, and STM functionalities.
    • Demonstrated simultaneous imaging capabilities on conductive samples.
    • Achieved a lateral resolution of 130 nm, enabling discrimination between p-doped silicon and aluminium depositions via electrical and optical contrast.

    Conclusions:

    • The combined SPM instrument provides a powerful platform for multi-modal surface analysis.
    • Simultaneous electrical and optical imaging facilitates material differentiation with high resolution.
    • This integrated approach enhances the characterization capabilities for nanoscale materials and devices.