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. Author manuscript; available in PMC: 2019 Apr 15.
Published in final edited form as: Sens Actuators B Chem. 2017 Dec 16;259:587–595. doi: 10.1016/j.snb.2017.12.038

Figure 1.

Figure 1

Optical image of the μDADs (a) and SEM image of the honeycomb-like diatomite (b), which forms the micro-channels of μDADs, and optical image of μDADs after 100 ppm pyrene migration illuminated by UV light (c)