Fig. 2
From: Non-fluorescent nanoscopic monitoring of a single trapped nanoparticle via nonlinear point sources
Optical potentials in 3D plasmonic nanoantenna. a, b Cross-sectional views of the plasmonic nanoantenna in the xy-plane and yz-plane, respectively. c, d Calculated optical potentials (U) in logarithm scale for a quantum dot (QD) moving along the xy-plane and yz-plane, respectively. Here, the incident pump power, central-gap size (g), and diameter of a QD are 10 mW, 5.0 nm, and 4.4 nm, respectively. e, f Optical potentials and the corresponding optical forces (F) along the x- and z-axis, respectively, near the center of the antenna
