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Phase Contrast and Differential Interference Contrast Microscopy

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A Time-lapse, Label-free, Quantitative Phase Imaging Study of Dormant and Active Human Cancer Cells

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Quantitative phase imaging unit.

KyeoReh Lee, YongKeun Park

|July 1, 2014

Summary

This summary is machine-generated.

A new, affordable method for quantitative phase imaging uses a simple filter on a standard microscope. This technique captures stable optical phase images of microscopic samples like red blood cells.

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Area of Science:

Optical microscopy
Biomedical imaging
Phase contrast microscopy

Background:

Quantitative phase imaging (QPI) is crucial for label-free cell analysis.
Existing QPI methods can be complex, expensive, or require specialized setups.
There is a need for cost-effective and accessible QPI techniques.

Purpose of the Study:

To present a simple and cost-effective method for quantitative phase imaging.
To adapt existing microscopes for QPI using a compact accessory.
To demonstrate the stability and applicability of the developed technique.

Main Methods:

Realization of a common-path lateral phase shifting interferometer.
Attachment of a compact filter set to an existing microscope's output port.
Derivation and explanation of working principles, design criteria, and limitations.

Main Results:

Successful implementation of a cost-effective QPI system.
High-stability optical phase images obtained.
Demonstration of capability with images of a microsphere and human red blood cells.

Conclusions:

The presented method offers a simple and affordable approach to QPI.
The technique is versatile and can be readily applied to existing microscopy setups.
This method enables stable, quantitative phase imaging for biological samples.