HEATER ASSEMBLY WITH A PLURALITY OF RECESSES

A heater assembly is provided for an aerosol-generating system having a liquid storage portion configured to hold a liquid aerosol-forming substrate, the heater assembly including: an electric heater configured to heat the substrate to form an aerosol; and a capillary body configured to convey the substrate from the liquid storage portion of the system to the heater, the heater being disposed on an outer surface of the capillary body and including a heating layer including a porous sheet of electrically conductive material, the porous sheet being embossed to define a plurality of recesses on its lower surface configured to retain the substrate by capillary action and a plurality of corresponding raised portions on its upper surface, and at least part of each of the plurality of recesses being spaced from the outer surface of the capillary body in a perpendicular direction.