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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

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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
The probe is regarded as the heart of any AFM setup and comprises the...
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Force Spectroscopy of Single Protein Molecules Using an Atomic Force Microscope
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Nanopuller-open data acquisition platform for AFM force spectroscopy experiments.

Konrad Pawlak1, Janusz Strzelecki1

  • 1Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland.

Ultramicroscopy
|March 20, 2016
PubMed
Summary

This study introduces Nanopuller, a free software for controlling laboratory-built Atomic Force Microscopes (AFM) for force spectroscopy. It enables flexible and accurate data acquisition for various biological samples.

Keywords:
Atomic force microscopeDNAForce spectroscopyNanoindentationProteinsSingle molecule experiments

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Area of Science:

  • Biophysics
  • Materials Science
  • Instrumentation

Background:

  • Atomic Force Microscopy (AFM) is crucial for force spectroscopy, but commercial systems are costly and proprietary.
  • Building custom AFM setups is feasible with accessible components, yet lacks dedicated control software.
  • Developing in-house software for laboratory-built AFMs is time-consuming and requires significant expertise.

Purpose of the Study:

  • To present Nanopuller, an open-source software solution for controlling custom-built force spectroscopy AFM instruments.
  • To provide a flexible and adaptable software tool that minimizes development time for researchers.
  • To demonstrate the efficacy of Nanopuller in controlling diverse AFM setups and acquiring high-quality data.

Main Methods:

  • Developed Nanopuller software using the LabVIEW graphical programming environment.
  • Designed Nanopuller for compatibility with National Instruments data acquisition interfaces and piezoelectric controllers.
  • Tested Nanopuller's performance with various laboratory-built AFM configurations and standard biological samples.

Main Results:

  • Nanopuller successfully controls custom AFM setups with minimal adjustments, offering significant experimental flexibility.
  • The software facilitates accurate force curve acquisition from standard samples, including single protein molecules, DNA, and red blood cells.
  • The availability of the full source code allows for easy customization and adaptation by researchers.

Conclusions:

  • Nanopuller effectively addresses the need for accessible and customizable software for laboratory-built force spectroscopy AFMs.
  • This open-source tool empowers researchers to build and operate their own AFM systems affordably.
  • Nanopuller enables precise force measurements on biological and other soft matter systems, advancing research capabilities.