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. 2021 May 3;11(14):6735–6745. doi: 10.7150/thno.57153

Figure 3.

Figure 3

Evaluation of coating thickness on the PC chip. (A) UV-vis absorbance spectra of the PC chips and glass slides coated with pDA as an ad-layer for 3, 6, and 9 h. (B) Thickness of the ad-layer and sequential silica coating on glass slides as measured by atomic force microscopy (AFM).