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Related Experiment Video

Updated: Jun 14, 2026

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Published on: May 23, 2017

Particle size measurements using an optical variable-frequency-grid technique.

J C Wang, D A Tichenor

    Applied Optics
    |March 24, 2010
    PubMed
    Summary
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    A new fringe visibility method accurately sizes particles 10 micrometers and larger. This technique shows promise but requires further optical and signal processing development for practical application.

    Area of Science:

    • Optics
    • Particle characterization
    • Metrology

    Background:

    • Accurate particle sizing is crucial in various industrial and scientific applications.
    • Existing methods may have limitations in speed, accuracy, or particle size range.

    Purpose of the Study:

    • To develop and evaluate a novel fringe visibility method for sizing particles.
    • To assess the feasibility of using variable frequency grids for particle size determination.

    Main Methods:

    • A fringe visibility method was developed, utilizing a variable frequency grid.
    • The optical arrangement involved scanning particle images across the grid to observe light signal oscillations.
    • Particle diameter was determined by identifying the null point where it approximated local grid spacing.

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    Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
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    Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

    Published on: August 21, 2018

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    Last Updated: Jun 14, 2026

    Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
    06:56

    Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

    Published on: May 23, 2017

    Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
    10:53

    Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques

    Published on: March 12, 2019

    Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
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    Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

    Published on: August 21, 2018

    Main Results:

    • The fringe visibility method was successfully applied to size particles 10 micrometers and larger.
    • Good agreement was observed between this technique and a commercial off-line analyzer for alumina and coal particles.
    • The developed optical arrangement and signal processing require further refinement.

    Conclusions:

    • The fringe visibility method offers a viable approach for particle sizing in the micrometer range.
    • Further development is needed to optimize the optical setup and signal processing for practical implementation.