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Related Experiment Videos

Scanning force images through the 'Milliscope'--a probe microscope with very wide scan range.

T Mariani1, C Ascoli, P Baschieri

  • 1Istituto di Biofisica-CNR, Ghezzano, Pisa, Italy. mariani@ib.pi.cnr.it

Journal of Microscopy
|October 3, 2001
PubMed
Summary

A novel home-built scanning force microscope (SFM) demonstrates effective imaging of biological samples. This Milliscope achieves high resolution across a wide scan area, comparable to commercial instruments.

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Area of Science:

  • Materials Science
  • Biotechnology
  • Microscopy

Background:

  • Scanning Force Microscopy (SFM) is a powerful technique for high-resolution imaging.
  • Existing SFM instruments often have limited scan areas, restricting their application in large-scale biological sample analysis.
  • Developing SFM with a wider scan range is crucial for advancing biological research.

Purpose of the Study:

  • To evaluate the performance of a newly developed, home-built scanning force microscope (SFM).
  • To assess the instrument's capability in imaging calibrating objects and biological samples (cytological and histological).
  • To determine the feasibility of creating wide-scan SFM instruments with simple, cost-effective methods.

Main Methods:

  • Construction of a home-built SFM with a large scan volume (1.2 x 1.2 x 0.13 mm³).

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  • Testing the instrument on calibrating objects and biological specimens.
  • Image acquisition across a range of sizes, from 1.2 x 1.2 mm² down to 1 x 1 µm².
  • Comparison of image quality with existing SFM systems.

    • Main Results:

    • The home-built SFM achieved a lateral resolution of approximately 10 nm.
    • Images obtained from biological samples were comparable in quality to those from commercial SFMs.
    • The instrument demonstrated effective performance even at smaller scan sizes, despite limitations in height range.
    • The 'Milliscope' operates across a broad magnification range, overlapping with optical and electron microscopes.

    Conclusions:

    • The developed wide-scan SFM, 'Milliscope,' is an effective imaging tool for biological applications.
    • Simple, inexpensive techniques can yield SFM instruments with large scan areas and good performance.
    • Further development of wide-scan SFM instruments is encouraged to expand the use of SFM in biology.