Thermal · photothermal heating
Their longitudinal plasmon can be tuned into the near-infrared window (about 650–900 nm), where tissue absorbs little, and they absorb strongly there.
From the exact absorption of the spheroid (T-matrix) at each wavelength and steady-state heat conduction into the surroundings.
A rod absorbs most when the light is polarized along it at its longitudinal resonance; across it, it absorbs much less.
The photothermal temperature of a nanorod or spheroid under light, in one click.