Penetration of Microwave Radiation into and through Metallic Powders
. It is known that bulk metallic samples reflect microwaves (MWs) while metallic powdered samples can absorb such radiation and be heated efficiently. The present paper shows a direct evidence of penetration of MW radiation into and through a layer of metallic powder and contains theoretical explanation of such behavior.
A.P. Anzulevich et al., "Penetration of Microwave Radiation into and through Metallic Powders", Solid State Phenomena, Vols. 152-153, pp. 361-364, 2009