“…The first step to express light-to-heat conversion process is calculated employing absorption cross-sections ( C abs ), extinction coefficients ( C ext ), and light absorption capacity ( A abs ), 70 using well known Mie theory is given by eqn (7) to (9), 71,72 ![]()
and C abs = C ext − C sca .In which the light absorption capacity is
, for volume of nanosphere ( V p = 4/3π r j 3 ), volume of nanorod ( V p = π r j 2 l here l is length of rod), and volume of plate ( V p = π r j 2 t t is thickness of plate core–shell). Where,
For which
and
Here, r c and r s are inner and outer radius of core–shell respectively, X j and Y j are determinants, η j is spherical Bessl function, ξ j is spherical Nuemann function, ψ j and Φ j are Riccati–Bessel function, and
is wave number for ε j is permittivity in which j = c,s,m.…”