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. 2020 Oct 29;20(21):6177. doi: 10.3390/s20216177

Figure 1.

Figure 1

SPR/LW-SAW sensor device (not drawn to scale): A set of electrodes (IDTs) deposited on the quartz surface is used to generate and detect the SAW. A transparent polymer layer acts as a waveguide layer. The optical beam reaches the gold surface from the opposite site and creates an SPR response.