Nguyen Thanh TUNG¹, YoungPak LEE¹, and Vu Dinh LAM^1,2*

¹Quantum Photonic Science Research Center and Department of Physics, Hanyang University, Seoul 133-791, Korea
²Institute of Materials Science, Vietnamese Academy of Science and Technology, Hanoi, Vietnam

(Received April 10, 2009; Accepted July 25, 2009)

We experimentally presented the electromagnetic behavior of transformative magnetic metamaterials: from the early invented split-ring resonator to its improvement, the cut-wire pair, for providing a negative magnetic permeability. By adding the continuous wire to cut-wire pair structure, the left-handed (LH) transmission made by doubly negative permittivity and permeability was demonstrated in combined structure. Interestingly, until the width of cut-wire pair increases to be physically merged with the adjacent continuous wire, in other words, to form the so-called fishnet structure, the LH behavior is still observed. This result indicates that in a broad sense, the essence of the electromagnetic response in the fishnet structure is similar to that in a combined structure. Our experimental results show a good agreement with previous theoretical study.

Key words: metamaterials, split-ring resonator, cut-wire pair, combined structure, fishnet structure

^*E-mail address: lamvd@ims.vast.ac.vn