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. Author manuscript; available in PMC: 2020 Nov 10.
Published in final edited form as: Anal Chem. 2019 Jul 5;91(14):8966–8972. doi: 10.1021/acs.analchem.9b01112

Figure 6.

Figure 6.

The liquid front velocity as a function of time in horizontal operation. The circle symbols (Inline graphic) correspond to the experimental values while the black line represents the model predictionl. The gap heights are (a) 234 μm, (b) 312 μm, and (c) 390 μm.