Ultrasensitive Force Measurements with Optically Levitated Nanoparticles
POSTER
Abstract
The large mechanical quality factor of optically levitated dielectric particles makes them an ideal
tool for precision measurement experiments. Using these techniques, we have previously achieved
zepto-Newton force sensitivity. By improving our technology and experimental methods, we report
progress on improved studies of the Newtonian gravitational inverse square law at micron length
scales. These measurements will place stronger limits on possible Yukawa type corrections to Newtonian
gravity in the sub millimeter regime.
tool for precision measurement experiments. Using these techniques, we have previously achieved
zepto-Newton force sensitivity. By improving our technology and experimental methods, we report
progress on improved studies of the Newtonian gravitational inverse square law at micron length
scales. These measurements will place stronger limits on possible Yukawa type corrections to Newtonian
gravity in the sub millimeter regime.
*This research is supported by the National Science Foundation and the Heising-Simons Foundation.?
Publication: Ranjit, G., Cunningham, M., Casey, K., & Geraci, A. A. (2016). Zeptonewton force sensing with nanospheres in an optical lattice. Physical Review A, 93(5).
Presenters
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Andrew Poverman
- Northwestern University