Figure 15.

Microwave sensor based on a pair of split ring resonators: (a) Layout of the microwave sensor along with the two split resonators used as reference and sensing resonators. (b) Measured and simulated transmission response for the bare and loaded sensor. (c) Captured time-lapsefor the growth of bacteria associated with the experiment where T is time in hours [81]. Reprinted from Mohammadi, S. A Label-Free, Non-Intrusive, and Rapid Monitoring of Bacterial Growth on Solid Medium Using Microwave Biosensor. IEEE Transactions on Biomedical Circuits and Systems, 2020, with permission from IEEE.