▎ 摘　　要

NOVELTY - The utility model claims an alcohol concentration measuring device using graphene of the terahertz surface plasma effect. in the device of high-resistance silicon prism lower surface are arranged in the silicon dioxide film, single-layer graphene, silicon dioxide film, alcohol solution and high-resistance silicon substrate. terahertz time domain spectral device measuring the silicon prism reflection of the terahertz pulse signal through the Fourier transform to obtain the frequency-reflection curve. graphene terahertz surface plasma effect can generate resonance peaks on the frequency-reflection curve, the peak moves along the alcohol concentration change. the terahertz time domain spectrum resolution less than 1 GHz, the resonance peak of reflectance curve change from pure water to pure alcohol solution to be measured in the measuring device moves more than 800 GHz so that the measuring device measures the accuracy of the alcohol concentration reaches more than thousand.