23 citations · 67 across the 11 of their papers we have counts for
4 papers · 1 filter
Theory of optical tweezing of dielectric microspheres in chiral host media and its applications
Rfaqat Ali, R. S. Dutra, F. A. Pinheiro +2
We report for the first time the theory of optical tweezers of spherical dielectric particles embedded in a chiral medium. We develop a partial-wave (Mie) expansion to calculate th…
Tailoring optical pulling forces with composite microspheres
R. Ali, F. A. Pinheiro, R. S. Dutra +1
Optical pulling forces or tractor beams can pull particles against light propagation by redirecting the incident photons forward. This is typically achieved using Bessel beams with…
Revisit of generalized Kerker's conditions using composite metamaterials
Rfaqat Ali
Achieving zero backward scattering (ZBS) and zero forward scattering (ZFS), i.e., the so-called the first and second Kerker's conditions respectively, by sphere spherical particles…
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…