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. Author manuscript; available in PMC: 2018 May 26.
Published in final edited form as: ACS Sens. 2017 May 2;2(5):670–678. doi: 10.1021/acssensors.7b00118

Figure 1.

Figure 1

Automated genotoxicity screening array: (A) 3-D printed devices without (left) and with (right) microwell chip and counter electrode wires inserted showing the sample chambers containing dye solutions. (B) Microwell-patterned pyrolytic graphite detection array showing the first row holding 1 μL water droplets retained by the hydrophobic microwell boundaries. Each row is fed by a separate sample line. The working array features films of DNA, metabolic enzymes, and RuPVP in each microwell. (C) Assembled array system showing box enclosing electronic microprocessors and micropumps driven by a rechargeable battery and connected to the 3-D printed array below with a wash reservoir (top) containing pH 7.4 buffer.