Figure 11

Trapping nanoparticles using gradient force stemming from highly localized field intensities in optical resonators. (A) A nanoparticle is trapped and propelled along the equatorial plane of a fiber taper coupled microsphere, where the fundamental WGM resides, adapted from [32]. (B) A waveguide coupled optofluidic ring resonator is used to manipulate, transport and trap nanoparticles; the particles either pass through the resonator (indicated by particles in green) under off-resonant condition or get trapped on the ring resonator under resonant condition (indicated by particles in red), with permission from [29], reproduced by permission of The Royal Society of Chemistry.

© De Gruyter