  Beltrami-shaped graphene sheets have been recently proposed as analogs of
curved spacetimes with Hawking-Unruh effects detected through typical condensed
matter measurements involving scanning tunneling microscopes and spectroscopy.
However, such deformed sheets, if ever fabricated, will contain large
strain-induced pseudomagnetic fields with important guiding effects on the
motion of the electrons in the conduction band. Besides, possible surface
polariton and plasmon modes are known to be important players in the radiative
heat transfer which takes place in the natural near-field nanoscale
experimental conditions. Therefore, we suggest here that the latter class of
experiments could shed light on phenomena related to the black hole membrane
paradigm instead
