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Related Concept Videos

Total Internal Reflection Fluorescence Microscopy01:05

Total Internal Reflection Fluorescence Microscopy

9.1K
Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
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Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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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...
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Updated: Oct 17, 2025

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
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Fluorescent reflector and image-processing-based D2D beam-steering system for V2V applications.

Seonghyeon Cho, Seungseop Lim, Kwanghoon Kim

    Applied Optics
    |October 6, 2021
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a cost-effective optical beam-steering system for vehicle-to-vehicle (V2V) communication, enhancing device-to-device (D2D) connectivity. The system achieves a wide field of view and high data rates, overcoming limitations of existing technologies.

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    Fluorescence Imaging with One-nanometer Accuracy FIONA
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    Fluorescence Imaging with One-nanometer Accuracy FIONA

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    Area of Science:

    • Optical Wireless Communication
    • Vehicle-to-Vehicle (V2V) Systems
    • Beam-Steering Technology

    Background:

    • Device-to-device (D2D) communication is crucial for low-latency, high-spectral efficiency V2V communication.
    • Optical beam-steering offers potential for D2D-V2V but existing microelectromechanical systems (MEMS) and spatial light modulator (SLM) techniques are complex, costly, and bulky for automotive applications.

    Purpose of the Study:

    • To introduce a novel, cost-effective optical beam-steering system tailored for D2D-V2V communication.
    • To address the limitations of current optical beam-steering methods in terms of complexity, size, and cost for V2V applications.

    Main Methods:

    • Development of a cost-effective optical beam-steering system utilizing a fluorescent reflector and stereo vision.
    • Implementation and proof-of-concept demonstration using readily available off-the-shelf devices and components.

    Main Results:

    • The proposed system successfully demonstrates optical beam-steering capabilities for D2D-V2V.
    • Achieved a field of view of +-30 degrees.
    • Supported a data rate of 300 Mb/s.

    Conclusions:

    • The developed fluorescent reflector and stereo vision-based system presents a viable and cost-effective solution for optical beam-steering in D2D-V2V communication.
    • The system's performance metrics indicate its suitability for enhancing V2V connectivity, overcoming the drawbacks of previous technologies.