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Related Experiment Video

Updated: Apr 8, 2026

Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy
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2D light scattering static cytometry for label-free single cell analysis with submicron resolution.

Linyan Xie1, Yan Yang1, Xuming Sun1

  • 1Institute of Biomedical Engineering, School of Control Science and Engineering, Shandong University, Jinan, Shandong, 250061, China.

Cytometry. Part a : the Journal of the International Society for Analytical Cytology
|June 27, 2015
PubMed
Summary

A new static cytometric technique uses a scanning optical fiber for label-free single cell analysis without microfluidics. This method analyzes 2D light scattering patterns for high-resolution diagnostics.

Keywords:
2D light scatteringMie theoryfinite-difference time-domainflow cytometrylabel-freesingle cellstatic cytometrysubmicron resolution

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Area of Science:

  • Biophotonics
  • Optical Engineering
  • Cell Biology

Background:

  • Conventional optical cytometry relies on fixed-angle measurements of cells in liquid flow.
  • Existing methods often require microfluidic fabrication and precise flow control for cell analysis.

Purpose of the Study:

  • To develop a novel, flow-free cytometric technique for label-free single cell analysis.
  • To utilize a scanning optical fiber and 2D light scattering for high-resolution cell characterization.

Main Methods:

  • A static cytometer employing a scanning optical fiber to illuminate individual cells on a glass slide.
  • Measurement of two-dimensional (2D) light scattering patterns using a low numerical aperture microscope objective.
  • Validation with Mie theory simulations for yeast cells and measurements on standard microspheres.

Main Results:

  • Demonstrated good agreement between experimental and simulated 2D light scattering patterns for yeast cells.
  • Showcased the potential for high-resolution analysis of yeast cells with varying sizes using a low-resolution objective.
  • Validated submicron resolution for size determination using standard microspheres.

Conclusions:

  • The developed static cytometric technique offers an easy-to-use, label-free, and flow-free approach for single cell diagnostics.
  • This method eliminates the need for microfluidics and flow control, simplifying cell analysis.
  • The 2D light scattering analysis provides high-resolution insights into cell characteristics.