Liquid Crystal Tunable Metamaterial Absorber

被引：540

作者：

Shrekenhamer, David ^{[1
]}

Chen, Wen-Chen ^{[1
]}

Padilla, Willie J. ^{[1
]}

机构：

[1] Boston Coll, Dept Phys, 140 Commonwealth Ave, Chestnut Hill, MA 02467 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 17期

关键词：

SPECTROSCOPY; REFRACTION; DESIGN; INDEX;

D O I：

10.1103/PhysRevLett.110.177403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present an experimental demonstration of electronically tunable metamaterial absorbers in the terahertz regime. By incorporation of active liquid crystal into strategic locations within the metamaterial unit cell, we are able to modify the absorption by 30% at 2.62 THz, as well as tune the resonant absorption over 4% in bandwidth. Numerical full-wave simulations match well to experiments and clarify the underlying mechanism, i.e., a simultaneous tuning of both the electric and magnetic response that allows for the preservation of the resonant absorption. These results show that fundamental light interactions of surfaces can be dynamically controlled by all-electronic means and provide a path forward for realization of novel applications. DOI: 10.1103/PhysRevLett.110.177403

引用

页数：5

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