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Related Concept Videos

Overview of Microscopy Techniques01:22

Overview of Microscopy Techniques

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The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
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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.
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A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
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Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays
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Scanning Probe Microscopy controller with advanced sampling support.

Miroslav Valtr1,2, Petr Klapetek1,2, Jan Martinek1

  • 1Czech Metrology Institute, Okružní 31, 638 00 Brno, Czech Republic.

Hardwarex
|July 27, 2023
PubMed
Summary
This summary is machine-generated.

A new, affordable Digital Signal Processor (DSP) enhances Scanning Probe Microscopy. This system supports flexible scan paths and real-time data analysis for advanced microscopy measurements.

Keywords:
Adaptive samplingField programmable gate arrayScanning probe microscopy

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Area of Science:

  • Instrumentation
  • Materials Science
  • Physics

Background:

  • Scanning Probe Microscopy (SPM) requires sophisticated data acquisition and processing.
  • Existing DSP solutions for SPM can be costly and inflexible.
  • Advanced SPM measurements demand high-resolution data and adaptable scan strategies.

Purpose of the Study:

  • To develop a low-cost Digital Signal Processor (DSP) unit for advanced Scanning Probe Microscopy (SPM) measurements.
  • To enable flexible and adaptive scan path generation and data analysis within SPM.
  • To integrate high-resolution analog-to-digital (AD) and digital-to-analog (DA) conversion with advanced processing capabilities.

Main Methods:

  • Utilized a Red Pitaya board as the core processing unit.
  • Developed custom electronic boards incorporating high bit-depth AD and DA converters.
  • Implemented a system providing position and time information with each collected data point.
  • Integrated Lua scripting for adaptive scan path generation and statistical calculations.

Main Results:

  • A functional low-cost DSP unit for SPM measurements was successfully developed.
  • The system supports arbitrary scan paths, including adaptive strategies via Lua scripting.
  • The DSP unit performs statistical calculations for real-time decision-making and scan optimization.
  • High bit-depth converters ensure precise data acquisition for advanced SPM applications.

Conclusions:

  • The developed low-cost DSP unit offers a flexible and powerful solution for advanced Scanning Probe Microscopy.
  • This system facilitates adaptive scanning and on-the-fly data analysis, improving SPM efficiency.
  • The integration of custom electronics with a Red Pitaya board provides a cost-effective platform for next-generation SPM instrumentation.