High-speed super-resolution structured illumination microscopy with a large field-of-view

Area of Science:

• Biophysics
• Microscopy
• Cell Biology

Background:

• Structured illumination microscopy (SIM) is crucial for visualizing subcellular structures and dynamics.
• Current SIM techniques face limitations in balancing spatial resolution, imaging speed, and field of view (FOV) due to bandwidth constraints.

Purpose of the Study:

• To develop a novel SIM technique overcoming the trade-offs between resolution, speed, and FOV.
• To achieve high-speed super-resolution imaging over a large FOV for observing dynamic biological processes.

Main Methods:

• Employed a high-speed camera for accelerated super-resolution image acquisition.
• Utilized a rolling image reconstruction strategy to enhance imaging speed.
• Incorporated deep resolution enhancement to further improve spatial resolution.

Main Results:

• Achieved a spatial resolution of 94 nm.
• Enabled imaging with a large FOV of 102 × 102 µm².
• Reached an impressive imaging speed of 1333 frames per second.

Conclusions:

• The novel SIM technique successfully demonstrated high-performance imaging of subcellular dynamics.
• Recorded Brownian motion of microspheres and photobleaching of microtubules.
• Offers a promising tool for high-throughput observation of fast subcellular dynamics in biomedical research.