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Related Concept Videos

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.

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Related Experiment Video

Updated: Jun 8, 2026

Fluorescence Imaging with One-nanometer Accuracy (FIONA)
11:56

Fluorescence Imaging with One-nanometer Accuracy (FIONA)

Published on: September 26, 2014

Real-time nanoscopy by using blinking enhanced quantum dots.

Tomonobu M Watanabe, Shingo Fukui, Takashi Jin

    Biophysical Journal
    |October 7, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Real-time superresolution microscopy is now possible using enhanced quantum dot blinking and variance calculations. This breakthrough achieves 90-nm resolution with 80-ms temporal imaging on standard microscopes.

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    Observation and Analysis of Blinking Surface-enhanced Raman Scattering

    Published on: January 11, 2018

    Related Experiment Videos

    Last Updated: Jun 8, 2026

    Fluorescence Imaging with One-nanometer Accuracy (FIONA)
    11:56

    Fluorescence Imaging with One-nanometer Accuracy (FIONA)

    Published on: September 26, 2014

    Compact Quantum Dots for Single-molecule Imaging
    17:14

    Compact Quantum Dots for Single-molecule Imaging

    Published on: October 9, 2012

    Observation and Analysis of Blinking Surface-enhanced Raman Scattering
    05:52

    Observation and Analysis of Blinking Surface-enhanced Raman Scattering

    Published on: January 11, 2018

    Area of Science:

    • Biophysics
    • Optical Microscopy
    • Nanotechnology

    Background:

    • Superresolution optical fluctuation imaging offers nanoscopy without complex equipment but requires too many images for real-time observation.
    • Higher-order cumulant calculations are typically used for fluorescence temporal fluctuations in this technique.

    Discussion:

    • This study modified superresolution optical fluctuation imaging to achieve real-time nanoscopy.
    • Enhanced quantum dot blinking was utilized, improving resolution via variance calculations instead of cumulant calculations.
    • The developed quantum dots exhibit higher blinking frequencies than commercially available options.

    Key Insights:

    • Real-time nanoscopy was achieved with 90-nm spatial resolution and 80-ms temporal resolution.
    • The method employs a conventional fluorescence microscope, requiring no specialized optics or devices.
    • Enhanced quantum dot fluorescence fluctuation is key to improving resolution and speed.

    Outlook:

    • This technique could enable new biological discoveries by allowing real-time observation of dynamic processes at the nanoscale.
    • Further optimization of quantum dot properties and imaging algorithms may lead to even higher resolutions and faster imaging speeds.
    • The accessibility of this method using standard equipment broadens the potential applications of superresolution microscopy in various research fields.