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| Localization of the electric-field distribution in graded core-shell metamaterials | |
| Wei, En-Bo1,2; Yu, K. W.3,4 | |
| 2009-10-01 | |
| 发表期刊 | PHYSICAL REVIEW E
 |
| ISSN | 1539-3755 |
| 卷号 | 80期号:4页码:46607 |
| 文章类型 | Article |
| 摘要 | The local electric-field distribution has been investigated in a core-shell cylindrical metamaterial structure under the illumination of a uniform incident optical field. The structure consists of a homogeneous dielectric core, a shell of graded metal-dielectric metamaterial, embedded in a uniform matrix. In the quasistatic limit, the permittivity of the metamaterial is given by the graded Drude model. The local electric potentials and hence the electric fields have been derived exactly and analytically in terms of hypergeometric functions. Our results showed that the peak of the electric field inside the cylindrical shell can be confined in a desired position by varying the frequency of the optical field and the parameters of the graded profiles. Thus, by fabricating graded metamaterials, it is possible to control electric-field distribution spatially. We offer an intuitive explanation for the gradation-controlled electric-field distribution.; The local electric-field distribution has been investigated in a core-shell cylindrical metamaterial structure under the illumination of a uniform incident optical field. The structure consists of a homogeneous dielectric core, a shell of graded metal-dielectric metamaterial, embedded in a uniform matrix. In the quasistatic limit, the permittivity of the metamaterial is given by the graded Drude model. The local electric potentials and hence the electric fields have been derived exactly and analytically in terms of hypergeometric functions. Our results showed that the peak of the electric field inside the cylindrical shell can be confined in a desired position by varying the frequency of the optical field and the parameters of the graded profiles. Thus, by fabricating graded metamaterials, it is possible to control electric-field distribution spatially. We offer an intuitive explanation for the gradation-controlled electric-field distribution. |
| 关键词 | Dielectric Materials Electric Potential Functional Analysis Metamaterials Microwave Materials Permittivity |
| 学科领域 | Physics, Fluids & Plasmas ; Physics, Mathematical |
| DOI | 10.1103/PhysRevE.80.046607 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000271350700094 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/2410 |
| 专题 | 海洋环流与波动重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, KLOCW, Qingdao 266071, Peoples R China 3.Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China 4.Chinese Univ Hong Kong, Inst Theoret Phys, Shatin, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, En-Bo,Yu, K. W.. Localization of the electric-field distribution in graded core-shell metamaterials[J]. PHYSICAL REVIEW E,2009,80(4):46607. |
| APA | Wei, En-Bo,&Yu, K. W..(2009).Localization of the electric-field distribution in graded core-shell metamaterials.PHYSICAL REVIEW E,80(4),46607. |
| MLA | Wei, En-Bo,et al."Localization of the electric-field distribution in graded core-shell metamaterials".PHYSICAL REVIEW E 80.4(2009):46607. |
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