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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

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Related Experiment Video

Updated: Jun 22, 2026

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
11:47

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Published on: February 27, 2013

Surface profilometry with composite interferometer.

Cheng-Chung Lai, I-Jen Hsu

    Optics Express
    |June 25, 2009
    PubMed
    Summary
    This summary is machine-generated.

    We developed a low-cost optical system for precise surface profilometry. This system achieves nanometer resolution for wide-field imaging without special environmental controls or sample preparation.

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    Area of Science:

    • Optics
    • Metrology
    • Interferometry

    Background:

    • Accurate surface profilometry is crucial for various scientific and industrial applications.
    • Existing methods often require complex setups, environmental isolation, or sample preparation.
    • There is a need for cost-effective, high-resolution surface measurement techniques.

    Purpose of the Study:

    • To propose and demonstrate a low-cost optical system for surface profilometry.
    • To achieve nanometer-level axial resolution over a wide field of view.
    • To develop a system robust against environmental perturbations and optical delay instability.

    Main Methods:

    • A composite interferometer combining Michelson and Mach-Zehnder configurations was designed.
    • A novel phase compensating mechanism was implemented to counteract environmental effects.
    • The system was configured for wide-field imaging in the millimeter range.

    Main Results:

    • The system demonstrated nanometer-resolution surface profilometry.
    • Axial resolution within +/-5 nm was achieved.
    • The system operated effectively without special shielding, protection, or sample preparation.

    Conclusions:

    • The proposed low-cost optical system offers a practical solution for high-resolution surface profilometry.
    • The composite interferometer with phase compensation provides robust and accurate measurements.
    • This technology has potential applications in fields requiring precise surface characterization.