Phase flow cytometry with coherent modulation imaging.

Area of Science:

• Biophotonics
• Optical Imaging
• Cellular Analysis

Background:

• Label-free imaging and identification of fast-moving cells present significant challenges in biological research and diagnostics.
• Existing phase flow cytometry methods often require complex optical setups and are sensitive to environmental instability.

Purpose of the Study:

• To develop a compact and accurate method for label-free imaging and identification of fast-moving cells.
• To demonstrate the potential of this technique for applications such as tumor cell detection.

Main Methods:

• A phase flow cytometry system utilizing coherent modulation imaging was designed.
• The system employs a random phase plate and a detector, eliminating the need for a reference beam and complex optical alignment.
• Phase images are reconstructed from diffraction patterns with high accuracy (0.01 wavelength) and resolution (1.23 μm).

Main Results:

• The proposed method achieved label-free imaging and identification of fast-moving cells with high accuracy.
• The system demonstrated a compact optical structure and enhanced tolerance to environmental instability compared to other phase flow cytometry techniques.
• Experimental results indicated a field of view of 0.126 mm².

Conclusions:

• The developed phase flow cytometry technique offers an efficient optical tool for label-free cell analysis.
• Its compact design and robustness make it suitable for real-time applications.
• The method shows promise for label-free tumor cell detection and other diagnostic applications.