1. Sensing of Microorganisms and Pesticides Based on Metamaterial Refractive Index Sensor.
- Author
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Anwar, Shahzad, Khan, Shamim, Ali, Ghafar, and Khan, Maaz
- Abstract
This study introduces an ultrathin metamaterial-based sensor designed for the accurate detection of microorganisms and pesticides displaying enhanced sensing capabilities. The innovative design incorporates of polyimide thin film act as dielectric layer while a single square gold patch featuring four uniformly sized notches act as sensing surface. The outcome of simulation reveals a single resonance peak with absorption rate equal to 100%. Furthermore, the design sensor sensing effectiveness has also been examined and analyzed by manipulating the refractive index and thickness of analyte layer. The sensor exhibits remarkable sensitivity with sensor sensitivity increases up to 0.175 THz/ RIU within 1 to 1.8 RI range. This increased sensitivity makes the sensor notably capable to detect microorganisms such as bacteria and pesticides revealing a significant frequency shift of 100 GHz (high sensitivity) for pesticides that has not been previously apparently in the literature. The novelty of work lies in remarkable sensing capabilities in the detection of microorganisms such as bacteria and various pesticides in terms of notable frequency shift making it significant for applications in agriculture and food products industry. The proposed research work can also be significant in other sensing applications such as chemical and bio- sensing industry applications. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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