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. 2021 Jan 18;7:8. doi: 10.1038/s41378-020-00236-9

Fig. 1. Diagram and sensing mechanism of the SPC resonator.

Fig. 1

a Diagram of the SPC resonator. IDTs for wave stimulation are in the center, while reflectors for resonance enhancement are on the two sides. b Diagram of the SPC used for biomolecule detection. The specific binding between bioreceptors and target biomolecules induces mass loading to the device surface, which causes a resonance frequency shift.