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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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A Method to Fabricate Disconnected Silver Nanostructures in 3D
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Published on: November 27, 2012

Laser microstructuring and scanning microscopy of plasmapolymer-silver composite layers.

J Martin, A Kiesow, A Heilmann

    Applied Optics
    |March 28, 2008
    PubMed
    Summary

    Laser-induced nanoparticle coalescence in plasma polymer films creates permanent submicrometer structures with unique optical properties. This method enables the fabrication of novel micro-optical elements for advanced applications.

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    Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
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    Published on: December 11, 2013

    Area of Science:

    • Materials Science
    • Nanotechnology
    • Optics

    Background:

    • Silver nanoparticles embedded in plasma polymer films exhibit unique optical properties.
    • Laser irradiation can induce structural modifications in nanomaterials.
    • Controlling nanostructure is key to tuning optical behavior.

    Purpose of the Study:

    • To investigate the laser-induced coalescence of silver nanoparticles in plasma polymer films.
    • To characterize the resulting submicrometer structures and their optical properties.
    • To demonstrate the fabrication of a micro-optical element using this technique.

    Main Methods:

    • Embedding silver nanoparticles within thin plasma polymer films.
    • Irradiating the films with a laser to induce nanoparticle coalescence.
    • Analyzing nanostructure changes using scanning electron microscopy (SEM).
    • Measuring optical transmission spectra with high spatial resolution.
    • Characterizing the fabricated micro-optical element with a confocal microscope.

    Main Results:

    • Permanent submicrometer structures were successfully generated in the films.
    • Laser irradiation caused thermally induced coalescence of silver nanoparticles.
    • Significant changes in optical transmission spectra were observed.
    • The generated structures exhibited unusual optical properties.
    • A functional planar micro-optical element was fabricated and characterized.

    Conclusions:

    • Laser-induced nanoparticle coalescence is an effective method for creating permanent nanostructures in plasma polymer films.
    • These nanostructures possess tunable and unusual optical properties.
    • The technique allows for the fabrication of micro-optical elements with potential applications in optics and photonics.