Realisation of a humidity sensor based on perfect metamaterial absorber |
| |
| Authors: | B. Ni Z. Y. Wang R. S. Zhao X. Y. Ma Z. Q. Xing L. S. Yang L. J. Huang Y. Y. Lin D. B. Zhang |
| |
| Affiliation: | 1.Jiangsu Key Laboratory of Meteorological Observation and Information Processing,Nanjing University of Information Science and Technology,Nanjing,China;2.Department of Material Science and Engineering,North Carolina State University,Raleigh,USA;3.College of Photonic and Electronic Engineering,Fujian Normal University,Fuzhou,China;4.Department of Physics,Changshu Institute of Technology,Changshu,China |
| |
| Abstract: | In this paper, we have proposed and investigated a humidity sensor based on perfect metamaterial absorber. The sensor is composed of three layers, which are metallic particle array on the top, porous silicon in the middle layer and metallic film at the bottom. According to the effective medium approximation, the effective permittivity of porous silicon is mainly determined by the filling fraction of water condensation. It is shown that the resonant wavelength displays significant red-shift with the increasing effective permittivity of porous silicon. Furthermore, the simulation results indicate that the refractive index sensitivity of absorber is high to 249 nm/RIU, which makes our structure be an ideal candidate for evaluating the humidity of environment. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
