6 papers
A Universal Magnetoelectric Limit for Chiral and Tellegen Bi-Isotropic Scatterers
Jorge Olmos-Trigo
We reveal the existence of a universal upper bound on the magnetoelectric coupling of any bi-isotropic nanoparticle. The bound arises solely from energy conservation, making it ind…
Optical forces, helicity, angular momentum and how they are all intertwined
Iker Gómez-Viloria, Enrique Ayllón GarcÃa, Jorge Olmos-Trigo +4
The theoretical description of optical forces and torques on micron_sized particles is a crucial area of research and has formed the foundation for advancements in optical trapping…
Detection of Hybrid Optical Anapoles in Dielectric Microspheres
Uttam Manna, Iker Gómez-Viloria, Robert Sevik +4
Nonradiating optical anapoles are special configurations of charge_current distributions that do not radiate. It was theoretically predicted that, for microspheres, electric and ma…
Characterizing the Backscattered Spectrum of Mie Spheres
MartÃn Molezuelas-Ferreras, Ãlvaro Nodar, MarÃa Barra-Burillo +10
This study describes both experimentally and theoretically an important hitherto undiscovered feature of the scattering of micron_sized spherical objects when illuminated with high…
On-Axis Optical Trapping with Vortex Beams: The Role of the Multipolar Decomposition
Iker Gómez-Viloria, Ãlvaro Nodar, MartÃn Molezuelas-Ferreras +5
Optical trapping is a well_established, decades old technology with applications in several fields of research. The most common scenario deals with particles that tend to be center…
An Exact Energy Conservation Law for Magneto-Optical Nanoparticles
Jorge Olmos-Trigo
Energy conservation imposes fundamental bounds on the polarizabilities of nanoparticles (NPs). While such bounds are well established for isotropic and bianisotropic NPs, they rema…