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.
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Why is it important?
The method is simple and versatile and can be applicable to any system with slow (~100Hz) oscillational motion
Read the Original
This page is a summary of: Imaging-based feedback cooling of a levitated nanoparticle, Review of Scientific Instruments, July 2022, American Institute of Physics,
DOI: 10.1063/5.0095614.
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