Unorthodox technique in sensing with the metamaterial-based resonator sensor at millimetre frequencies

A metamaterial-based resonator is presented in this paper for liquid-sensing applications. The designed sensor operates at millimetre-wave (mm-w) frequencies, and it can characterise the samples that may possess identical characteristics. This relies on extracted permittivity of structure characterisation samples, mainly liquids. requires a very small amount sensing used distinguishing oil, ethanol, methanol, glycerol water. shift resonance frequency about 200 MHz per unit increase epsilon value was achieved. oil sample showed lowest value, while water nearest to zero permittivity. relationship variation parameter with change sample’s found be linear reliable regardless thickness sample.