Wave-Matter Interaction Analysis Of Metamaterial Unit Immerged In Liquid Media

This paper analyzes the interaction between the incident electromagnetic wave and the metamaterial unit (the regular split ring pair) immerged in a low-loss liquid media, and interesting dynamic phenomena are observed. The resonance frequency shifts of the metamaterial unit exposed in air and immerged in polyalphaolefin (PAO) are experimentally investigated and compared, and such shift ranges in different acting times are also provided. The observed resonance shift is mainly resulting from the distance reduction between the two split rings because of the induced Ampere's force acting on the structure. Such findings can open a new research area in the metamaterial community and have many potential applications for the characterizations of the liquid media with metamaterials.