It is shown that by tailoring composition of the dielectric I-layer in MIM metasurface, it is possible to tune its absorption to the most efficient coupling with the plasmonic mode of the MIM metasurface as demonstrated using SiO 2 and CaF 2 I-layers of different thicknesses. A good match between theory and experiment was achieved and the guiding principles to make practical narrowband IR emitters/radiators is outlined. Such MIM surfaces can be heated up to hundreds of Centigrade temperatures for ap-