AN TERAHERTZ  SENSOR USING METAMATERIAL ABSORBER FOR METHANOL SENSING

¹ Defense Key Disciplines Lab of Novel Micro-nano Devices and System Technology，Chongqing University, Chongqing, China
² International R & D center of Micro-nano Systems and New Materials Technology，Chongqing University, Chongqing, China
³ Key Laboratory of Optoelectronic Technology & Systems, Ministry of Education, Chongqing University, Chongqing, China

Published: 21 July 2017 by MDPI in The 7th International Multidisciplinary Conference on Optofluidics 2017 session Silicon photonics

https://doi.org/10.3390/optofluidics2017-04422

Abstract:

This paper presents a chemical sensor using a metamaterial absorber, which consisted of an Au Bottom layer, a FR4 substrate and a double-split-square-resonator (DSSR).The resonance generated by DSSR, which is extraordinarily sensitive to changes of the effective dielectric constant around the capacitive gap. The proposed sensor shows a great sensitivity and a high value of Q by a creative periodic DSSR structure and the Au Bottom layer. In addition, the relationship between the absorption frequency and chemical concentration is demonstrated by simulation.

Keywords: metamaterial, chemical sensor, methanol sensing

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