An Expedient SERS Strip Tactic for Rapid On-Site Detection with Long-Time Sensitivity and Repeatability

Figure 2

(a) The TEM image of AgNPs and the SEM images of test strips surface after (b) 1 cycle, (c) 2 cycles, (d) 3 cycles, (e) 4 cycles, and (f) 5 cycles of dip-coating and heating. The scale bar of the TEM image is 0.1 μm, and the scale bar of the SEM images is 0.5 μm.

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