What is it about?
By directing radio waves into a precisely shaped metal cavity, a standing wave forms at a specific frequency. Any slight change in the cavity’s shape or contents alters this frequency, which can be detected by analyzing the reflected waves. We use this method to monitor the movements of a millimeter-sized levitated graphite sheet, allowing us to observe subtle motions and forces with high sensitivity.
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Why is it important?
This technique offers a highly sensitive method for studying small-scale physical interactions and forces, providing valuable insights into areas such as gravitational sensing and quantum mechanics.
Read the Original
This page is a summary of: Characterizing low-frequency vibratory motion with radio-frequency cavities, Journal of Applied Physics, September 2024, American Institute of Physics,
DOI: 10.1063/5.0219033.
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