What is it about?
The motion of levitated charged nanoparticles in a vacuum was monitored with a simple CMOS camera module. The particle images were taken at > 200 fps and real-time processed to extract the position of the particle with high precision. By counteracting the motion of the particle with an electric field, we can damp the motion.
Photo by dan carlson on Unsplash
Why is it important?
The method is simple and versatile and can be applicable to any system with slow (~100Hz) oscillational motion
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This page is a summary of: Imaging-based feedback cooling of a levitated nanoparticle, Review of Scientific Instruments, July 2022, American Institute of Physics,
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