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. 2020 Jul 20;20(14):4024. doi: 10.3390/s20144024

Figure 5.

Figure 5

Measured center frequency shift and amplitude variation of micro-fabricated microwave biosensor after interaction of glucose–water solution with different concentrations (0.3–5 mg/mL), the inset image represents the optical microscopic image of the dropped glucose–water sample with hydrophobicity analysis located at the sensing region.