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Related Experiment Videos

White blood cell differentiation using a solid state flow cytometer

R M Doornbos1, E J Hennink, C A Putman

  • 1Department of Applied Physics, University of Twente, Enschede, The Netherlands.

Cytometry
|January 1, 1993
PubMed
Summary
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A new, compact, and affordable flow cytometer was developed using diode lasers and avalanche photodiodes. This solid-state system effectively differentiates human leukocytes via light scattering, matching standard instrument performance.

Area of Science:

  • Biomedical Engineering
  • Optical Physics
  • Cell Biology

Background:

  • Flow cytometry is crucial for cell analysis.
  • Traditional flow cytometers often rely on bulky and expensive components like helium-neon lasers and photomultipliers.
  • There is a need for more compact, cost-effective, and robust flow cytometry systems.

Purpose of the Study:

  • To design and construct a novel flow cytometer utilizing solid-state light sources and detectors.
  • To evaluate the performance of diode lasers (670 nm and 780 nm) for leukocyte differentiation.
  • To assess the efficacy of an avalanche photodiode detector for capturing scattered light.

Main Methods:

  • Development of a compact flow cytometer prototype.
  • Illumination of the sample stream using 670 nm and 780 nm diode lasers.

Related Experiment Videos

  • Detection of orthogonally scattered light with an avalanche photodiode.
  • Differentiation of human leukocytes based on light scattering patterns.

    • Main Results:

    • The new flow cytometer is significantly smaller and more cost-effective than conventional systems.
    • Similar results in differentiating human leukocytes were achieved compared to standard flow cytometers.
    • The solid-state components (diode lasers and avalanche photodiode) proved effective for light scattering detection.

    Conclusions:

    • A compact, low-cost, solid-state flow cytometer has been successfully developed.
    • The system demonstrates comparable performance to traditional flow cytometers for human leukocyte differentiation.
    • This technology offers a viable alternative for applications requiring portable or budget-friendly flow cytometry.