152 citations · 907 across the 30 of their papers we have counts for
3 papers · 1 filter
Precise in situ radius measurement of individual optically trapped microspheres using negative optical torque exerted by focused vortex beams
Kainã Diniz, Tanja Schoger, Guilherme T. Moura +6
We demonstrate a new method for determining the radius of micron-sized particles trapped by a vortex laser beam. The technique is based on measuring the rotation experienced by the…
Tailoring bistability in optical tweezers with vortex beams and spherical aberration
Arthur Luna da Fonseca, Kainã Diniz, Paula Borges Monteiro +7
We demonstrate a bistable optical trap by tightly focusing a vortex laser beam. The optical potential has the form of a Mexican hat with an additional minimum at the center. The bi…
Probing the optical chiral response of single nanoparticles with optical tweezers
R. Ali, F. A. Pinheiro, R. S. Dutra +2
We propose an enantioselective scheme to sort homogeneous chiral particles using optical tweezers. For a certain range of material parameters, we show that a highly focused circula…