Fig. 1.

Normalized average powers absorbed (left panels) and scattered (right panels) by three Si@Au nanoshell ensembles. The total number N of the nanoshells in the ensembles vary as $N\left(R_2\right)\propto R_2^{-\beta }$, where β = 1 in (a) and (b), β = 2 in (c) and (d), and β = 3 in (e) and (f). In all cases, nanoshells were assumed to be embedded in cancerous tissue with n₀ = 1.44; the refractive index of silica was taken from Ref. [49].