Figure 7
From: Direct Measurement of Optical Force Induced by Near-Field Plasmonic Cavity Using Dynamic Mode AFM
Measured optical force F′ normalized by transmission as a function of cavity separation r.
The measurements are made in the plasmonic resonant cavity with gold disk diameter d varying from 300 nm to 750 nm. The solid lines are drawn to guide the eye. The black solid circles (with a dashed line) show the measured background force acting on the AFM cantilever beam.
