Open AccessSensitivity influencing factors during pesticide residue detection research via a terahertz metasensor
Author(s) -
Yunxia Ye,
Yixing Zhang,
Yu Zhao,
Yunpeng Ren,
Xudong Ren
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.424367
Subject(s) - metamaterial , terahertz radiation , sensitivity (control systems) , materials science , analyte , optics , pesticide residue , pesticide , optoelectronics , chromatography , physics , chemistry , electronic engineering , agronomy , engineering , biology
Two metamaterial sensors were designed to test three pesticide residues. The influences of the metamaterial structure, the analyte composition and volume on the sensitivity have been studied. The metamaterial field-enhancement ability has an important influence on the sensitivity within the high-concentration range, while the coincidence between the metamaterial resonant frequency and the analyte fingerprint peak plays a dominant role within the low-concentration range. These findings allow us to better understand the process and find a way to improve the sensitivity.