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Simultaneous Interference Reflection and Total Internal Reflection Fluorescence Microscopy for Imaging Dynamic Microtubules and Associated Proteins

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Total-internal-reflection fluorescence microscopy with W-shaped axicon mirrors.

Ming Lei¹, Andreas Zumbusch

¹Department of Chemistry and Center for Applied Photonics, University of Konstanz, D-78457 Konstanz, Germany.

|December 3, 2010

Summary

A novel W-shaped axicon mirror device enhances total-internal-reflection fluorescence microscopy (TIRFM) efficiency and illumination control. This method produces high-quality TIRF images without artifacts, simplifying mode switching for advanced biological imaging.

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Area of Science:

Microscopy
Optical Physics
Biotechnology

Background:

Traditional total-internal-reflection fluorescence microscopy (TIRFM) faces limitations in efficiency and illumination control.
Existing TIRFM methods can suffer from shadow artifacts and interference fringes, complicating image analysis.

Purpose of the Study:

To present a new scheme for TIRFM utilizing a W-shaped axicon mirror device.
To demonstrate improved efficiency, adjustable illumination, and seamless mode switching capabilities.

Main Methods:

Implementation of a W-shaped axicon mirror device for TIRFM.
Comparison of imaging performance against traditional TIRFM setups.
Acquisition of micrographs from various biological samples and standard beads.

Main Results:

The W-shaped axicon mirror scheme achieves higher efficiency than conventional TIRFM.
Adjustable illumination area and simple switching between wide-field and TIRF modes are demonstrated.
Generated TIRF images are free from shadow artifacts and interference fringes.

Conclusions:

The W-shaped axicon mirror device offers a significant advancement for TIRFM.
This approach provides enhanced image quality and operational flexibility for biological imaging applications.
The scheme is versatile and applicable to diverse biological samples.