ABSTRACT
This chapter presents the recent progress on scattering manipu-
lation of objects using anisotropic metasurfaces in the microwave
(MW) range and plasmonic loadings at optical wavelengths.
Different from previously reported transformation optics-enabled
coatings, they are achieved based on modifying the complex Mie
scattering coefficients of an object. In particular, the nonvanishing
radial response of an anisotropic metasurface is exploited to
accomplish near-perfect cloaking and angle-tolerant illusion for
objects beyond the quasi-static limit. In the second part of this
chapter, it is demonstrated how plasmonic core-shell particles can
provide a compact and robust solution toward the realization of
nanocircuit loads that offer unprecedented flexibility in tuning
the response of a nanodipole-type antenna. In particular it is
shown that plasmonic core-shell particles can be engineered
such that they exhibit internal resonances which resemble the
open-and short-circuit states of either a series or a parallel LC
resonator. It is further demonstrated that such engineered internal
resonating characteristics of core-shell particles are a consequence
of their nanomixture characteristics, which can be exploited for
nanodipole antenna tuning. Indicative examples are provided that
demonstrate the tuning range that core-shell particles are capable of
offering.
