, Volume 14, Issue 2, pp 327–333 | Cite as

Tunable Absorbers Based on an Electrically Controlled Resistive Layer

  • Changlei Zhang
  • Cheng Huang
  • Mingbo Pu
  • Jiakun Song
  • Xiangang LuoEmail author


In this article, an electrically controlled resistive layer (ECRL) is proposed to construct tunable absorbers. This ECRL is composed of VO2 film and resistive layer without lithography pattern. The effective resistance of ECRL is numerically verified to be tuned from 18 to 300 Ω/sq as the VO2 conductivity is changed based on electro-thermally induced insulator-to-metal transition. With such a large tuning range of the effective resistance, the ECRL is utilized to realize a planar tunable bidirectional absorber with absorption efficiency dynamically tuned between 98 and 18% through controlling the conductivity of VO2. In addition, we demonstrate that the ECRL is also suitable for the design of non-planar tunable absorber. It is still found that the ECRL-based tunable absorbers have the wide angle and polarization-insensitive absorbing properties. These results may be of great interest for tunable absorbing, detecting, smart window, and thermo-solar cell applications.


Electrically controlled resistive layer Tunable bidirectional absorber Tunable broadband absorber Polarization-insensitive Terahertz waves 


Funding Information

This work was sponsored by the National Basic Research (973) Program of China under grant no. 2013CBA01700 and the National Natural Science Foundation of China under grant nos. 61475160, 61605213, and 61775218.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and ElectronicsChinese Academy of SciencesChengduChina
  2. 2.University of Chinese Academy of SciencesBeijingChina

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