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Related Concept Videos

Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...

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Related Experiment Video

Updated: Jun 16, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
15:06

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Published on: January 3, 2016

Single particle scattering with focused laser beams.

L W Casperson, C Yeh, W F Yeung

    Applied Optics
    |February 20, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a focused laser scattering technique for analyzing individual particles. Experiments with latex spheres confirm the technique

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    Area of Science:

    • Physics
    • Optical Science
    • Materials Science

    Background:

    • Studying individual particles is crucial for understanding material properties.
    • Existing techniques may struggle to isolate single-particle effects in natural environments.

    Purpose of the Study:

    • To develop and validate a novel scattering technique for single-particle analysis.
    • To enable the study of particles in their native conditions.

    Main Methods:

    • Utilizing a tightly focused incident laser beam.
    • Implementing a scattering measurement approach.
    • Conducting experiments with latex spheres as model particles.

    Main Results:

    • The focused laser beam successfully isolates the scattering effects of individual particles.
    • Experimental data from latex spheres align with theoretical predictions.

    Conclusions:

    • The described scattering technique is effective for single-particle characterization.
    • This method allows for in-situ study of particles, enhancing experimental accuracy.