![Fig. 12.12 — Self-induced back action traps](https://i0.wp.com/opticaltweezers.org/wp-content/uploads/2015/11/Fig12_12.png?fit=660%2C285)
Self-induced back action traps. Schematic of SIBA trapping set-up employing a 310 nm aperture in a 100 nm Au film to trap 50 nm radius polystyrene spheres in water: as the particle is about to escape the nanohole, the optical potential becomes deeper and pulls it back.
Reprinted by permission from Macmillan Publishers Ltd: Juan et al., Nature Photon. 5, 349–56, copyright 2011.
Fig. 12.12 — Self-induced back action traps