Graphene-based Radiofrequency resonator for non-invasive glucose detection

This paper presents a radio-frequency (RF) sensor to detect glucose oxidase. At the core of the proposed approach is a graphene film deposited on a gap connected to a split ring resonator. The graphene film is doctor bladed on the gap. The film is then properly chemically functionalized in order to detect the presence of glucose. In this paper, we validate the proof-of-concept operation of glucose concentration detection by measuring the frequency shift of the transmission coefficient of the sensor.