composite resonator
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Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2549
Author(s):  
José R. Reyes-Ayona ◽  
Eloisa Gallegos-Arellano ◽  
Juan M. Sierra-Hernández

A moisture sensor based on a composite resonator is used to measure different honey samples, which include imitation honey. The sensor changes its frequency response in accordance with the dielectric permittivity that it detects in the measured samples. Although reflectometry sensors have been used to measure the percentage of moisture in honey for almost a century, counterfeiters have achieved that their apocryphal product is capable of deceiving these kinds of sensors. Metamaterial features of the composite resonators are expected to improve their response when detecting lossy samples such as organic samples. It is also sought that these sensors manage to detect small differences not only in the real parts of the dielectric permitivities of samples but also in their imaginary parts, and, thus, the sensors are able to discern between real honey and slightly altered honey. Effectively, not only was it possible to improve the response of the sensors by using lossy samples but it was also possible to identify counterfeit honey.


Author(s):  
Andres Toledo Lopez ◽  
José Roberto Reyes Ayona ◽  
Laura Giselle Martinez Ramirez ◽  
Sergio E. Medina Cuellar ◽  
Juan Manuel Sierra-Hernández

2018 ◽  
Vol 113 (2) ◽  
pp. 022903 ◽  
Author(s):  
Yuri K. Fetisov ◽  
Dmitri A. Burdin ◽  
Nikolai A. Ekonomov ◽  
Leonid Y. Fetisov ◽  
Alexey A. Berzin ◽  
...  

2015 ◽  
Vol 107 (17) ◽  
pp. 172904 ◽  
Author(s):  
Wei Wang ◽  
Zhifeng Wang ◽  
Xiaobin Luo ◽  
Jin Tao ◽  
Ning Zhang ◽  
...  
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