Related Experiment Video
Updated: Jun 5, 2026
07:53
Application of High-speed Super-resolution SPEED Microscopy in Live Primary Cilium
Published on: January 16, 2018
High-speed synthetic aperture microscopy for live cell imaging.
Moonseok Kim1, Youngwoon Choi, Christopher Fang-Yen
1Department of Physics, Korea University, Seoul 136-701, South Korea.
Optics Letters
|January 26, 2011
Summary
High-speed synthetic aperture microscopy enables rapid, high-resolution quantitative phase imaging of live biological cells. This advanced technique significantly reduces artifacts and improves image quality for dynamic cellular studies.
Area of Science:
- Biophysics
- Optical Microscopy
- Cell Biology
Background:
- Quantitative phase imaging (QPI) is crucial for label-free visualization of live cells.
- Traditional QPI methods can be slow and prone to artifacts like diffraction.
Purpose of the Study:
- To develop a high-speed synthetic aperture microscopy (SAM) system for enhanced QPI of live cells.
- To improve image quality by suppressing artifacts and increasing lateral resolution.
Main Methods:
- Acquired 361 complex amplitude images with varying illumination directions (NA 0.8) in under 1/13th of a second.
- Utilized a phase-referencing method to reconstruct a synthesized phase image.
- Leveraged increased depth selectivity to minimize diffraction artifacts.
Main Results:
- Achieved high-quality, artifact-suppressed quantitative phase images of live biological cells (static and dynamic).
- Demonstrated improved lateral resolution in phase imaging.
- Successfully performed thickness measurements of nanoscale cholesterol helical ribbons.
Conclusions:
- High-speed SAM provides a powerful tool for real-time, high-resolution QPI of cellular dynamics.
- The technique offers significant advantages over conventional methods for live-cell imaging and nanoscale metrology.
Related Concept Videos
01:37Super-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.
01:16Confocal 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,...