  We analyze in this work some analogies between thermal emission of nano
objects and Hawking's radiation. We first focus on the famous expression of the
black hole radiating temperature derived by Hawking in 1974 and consider the
case of thermal emission of a small aperture made into a cavity (Ideal
Blackbody). We show that an expression very similar to Hawking's temperature
determines a temperature below which an aperture in a cavity cannot be
considered as standard blackbody radiating like T^4. Hawking's radiation
therefore appear as a radiation at a typical wavelength which is of the size of
the horizon radius. In a second part, we make the analogy between the emission
of particle-anti particle pairs near the black hole horizon and the scattering
and coupling of thermally populated evanescent waves by a nano objects. We show
here again that a temperature similar to the Hawking temperature determines the
regimes where the scattering occur or where it is negligible.
