  We study the angular scattering properties of individual core-shell
nanoparticles that support simultaneously both electric and optically-induced
magnetic resonances of different orders. In contrast to the approach to
suppress the backward scattering and enhance the forward scattering relying on
overlapping electric and magnetic dipoles, we reveal that the directionality of
the forward scattering can be further improved through the interferences of
higher order electric and magnetic modes. Since the major contributing electric
and magnetic responses can be tuned to close magnitudes, ultra-directional
forward scattering can be achieved by single nanoparticles without compromising
the feature of backward scattering suppression, which may offer new
opportunities for nanoantennas, photovoltaic devices, bio-sensing and many
other interdisciplinary researches.
