Affiliation:
1. Beijing Jiaotong University
2. Anhui University of Science and Technology
3. Zaozhuang University
Abstract
Food safety is an important consideration for the food industry and for daily life, and food additives are essential in the modern food industry. Graphene-based metamaterial sensors are of great value and have potential applications in the detection of food additives, due to their ultra-sensitivity. This paper proposes a metasurface sensor consisting of graphene and dual elliptical ring resonators (Gr-DERRs) sensor for the detection of two common food additives. The limit of detection (LOD) for Sudan I solution is 581.43 fg/ml and, for taurine, 52.86 fg/ml. This ultra-sensitive detection is achieved by exploiting the unique electromagnetic properties of electromagnetically induced transparency (EIT) resonance, together with the Fermi energy level of graphene moving to the Dirac point, resulting in a dramatic change in the dielectric environment. The Gr-DERRs sensor has brings significant improvement in the detection of food additives with detection limits reduced to the femtogram level.
Funder
Taishan Scholar Project of Shandong Province
Qingchuang Science and Technology Plan of Shandong Universities
National Key Research and Development Program of China
National Natural Science Foundation of China
Natural Science Foundation of Shandong Province
China Postdoctoral Science Foundation
Subject
Atomic and Molecular Physics, and Optics
Cited by
1 articles.
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