Abstract
Non-invasive manipulation and trapping of nanoparticles, molecules, and cells are essential in a variety of fields. The total optical force and near-field enhancement via localized surface plasmon resonance in the dielectric cylinder pairs coated with black phosphorus (DCPs-BP) are studied analytically and numerically in this work. In the DCPs-BP structure, the total optical force between the two cylinders can reach over 1000 pN/(mW μm). Specifically for the polystyrene particle captured in the center of the DCPs-BP structure, the optical trapping force up to 4000 pN/(mW μm) can be achieved. These results provide new avenues for the successful manipulation and capture of nanoscale particles.
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