High-speed optical imaging with sCMOS pixel reassignment.

Area of Science:

• Biophysics
• Cell Biology
• Microscopy

Background:

• Fluorescence microscopy enables visualization of biological processes.
• Current limitations in camera architecture hinder the study of rapid biological dynamics.
• There is a need for advanced imaging techniques to capture fast cellular events.

Purpose of the Study:

• To introduce sHAPR, a novel high-speed acquisition technique for fluorescence microscopy.
• To overcome the speed limitations of current digital cameras in biological imaging.
• To enable the study of fast cellular and subcellular dynamics.

Main Methods:

• sHAPR utilizes custom fiber optics to convert 2D microscopy images into 1D recordings.
• The technique leverages the high readout rates of scientific complementary metal-oxide-semiconductor (sCMOS) cameras (25–250 kHz).
• Standard epi-fluorescence microscopes can be adapted for sHAPR implementation.

Main Results:

• sHAPR successfully captured rapid biological dynamics in various systems.
• Demonstrated applications include high-throughput flow cytometry, cardiomyocyte contraction, and neuronal calcium waves.
• The technique achieved acquisition rates up to 250 kHz.

Conclusions:

• sHAPR significantly enhances fluorescence imaging speed, enabling new research possibilities.
• The method is adaptable to existing microscopy setups with minimal modifications.
• This technique pushes the boundaries for investigating high-speed biological phenomena.