38 citations
2 papers
physics.optics2024★ 3 cited
Probing the chirality of a single microsphere trapped by a focused vortex beam through their orbital period
Kainã Diniz, Tanja Schoger, Arthur L. Fonseca +6
When microspheres are illuminated by tightly focused vortex beams, they can be trapped in a non-equilibrium steady state where they orbit around the optical axis. By using the Mie-…
physics.optics2019★ 38 cited
Negative optical torque on a microsphere in optical tweezers
K. Diniz, R. S. Dutra, L. B. Pires +3
We show that the optical force field in optical tweezers with elliptically polarized beams has the opposite handedness for a wide range of particle sizes and for the most common co…