Dual Property of Mu-near-zero to Epsilon-near-zero Material
- Authors
- Ko, Seung-Tae; Lee, Jeong-Hae
- Issue Date
- Jul-2010
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Metamaterial; Mu-near-zero; Epsilon-near-zero
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.57, no.1, pp.51 - 54
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 57
- Number
- 1
- Start Page
- 51
- End Page
- 54
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/20755
- DOI
- 10.3938/jkps.57.51
- ISSN
- 0374-4884
- Abstract
- In this paper, a mu-near-zero (MNZ) material is theoretically demonstrated to have a dual property of an epsilon-near-zero (ENZ) material, such as narrow channel tunneling and a zero transmitted angle. In order for an electromagnetic wave to transmit; through arbitrarily-shaped subwavelength narrow channel filled with an ENZ or MNZ material, both a proper boundary and a proper geometry of the narrow channel are required. These conditions turn out to have a duality relation between the ENZ and the MNZ materials. As an application of zero transmitted angle through a MNZ material, a X-band E-plane sectoral horn, which has improved directivity and which uses a MNZ material slab with a plasma frequency of 9.34 GHz, is designed. The results show that the directivity of the E-plane sectoral horn is increased by 2.59 dB when a MNZ material slab is inserted at the horn aperture.
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