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Microscopic scan-free surface profiling over extended axial ranges by point-spread-function engineering.

Racheli Gordon-Soffer^1,2, Lucien E Weiss^1,2, Ran Eshel³

¹Department of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel.

Science Advances

|October 29, 2020

Summary

This summary is machine-generated.

This study introduces scan-free microsurface profiling using point-spread-function engineering. The technique captures dynamic surface changes and large axial steps efficiently for material characterization.

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Area of Science:

Materials Science
Optical Engineering
Surface Science

Background:

Surface topography significantly impacts material properties and functionality.
Accurate surface characterization is crucial across diverse scientific and industrial applications.
Existing methods face challenges in high-speed acquisition for dynamic structures and handling large axial variations.

Purpose of the Study:

To develop a scan-free method for dynamic microsurface profiling.
To overcome limitations of current techniques in capturing temporally changing structures and large axial steps.
To demonstrate versatile surface profiling using point-spread-function engineering.

Main Methods:

Leveraging point-spread-function engineering for advanced optical measurements.
Implementing scan-free, dynamic microsurface profiling.
Developing both fluorescence-based and label-free approaches for surface imaging.

Main Results:

The method enables high-speed, full-field-of-view surface profiling at camera-limited frame rates.
The technique demonstrates robustness to significant axial steps in surface geometry.
Successful application to various sample geometries and surface types was shown.

Conclusions:

Point-spread-function engineered microsurface profiling offers a robust solution for dynamic and complex surface characterization.
The developed methods provide efficient and versatile tools for analyzing material topography.
This approach enhances capabilities in applications requiring rapid and precise surface analysis.