Chinese Journal of Lasers, Volume. 46, Issue 6, 0614015(2019)
Detection of Alcohol-Water Mixture Based on Grating-Structured Terahertz Resonator
A flexible metamaterial-based resonator was used to monitor the alcohol-water mixtures with different volume fractions using the terahertz time-domain spectroscopy (THz-TDS) in a transmission geometry. As the volume fraction of alcohol increases, the resonant frequencies of the biosensor blue-shift. The frequency shift of the second peak is higher than that of the first peak, the maximum shift value is 52 GHz, and the sensitivity is around 100 GHz/RIU. The developed resonator is flexible and has extremely low solution consumption (≈20 μL), indicating the proposed method shows possibility for the applicability of THz-TDS and the industrial application of THz resonators in the field of biology.
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Pengfei Wang, Mingxia He, Zhen Tian, Hongwei Zhao. Detection of Alcohol-Water Mixture Based on Grating-Structured Terahertz Resonator[J]. Chinese Journal of Lasers, 2019, 46(6): 0614015
Category: terahertz technology
Received: Jan. 30, 2019
Accepted: Mar. 4, 2019
Published Online: Jun. 14, 2019
The Author Email: He Mingxia (hhmmxx@tju.edu.cn)