Automated Long-Term Monitoring of Parallel Microfluidic Operations Applying a Machine Vision-Assisted Positioning Method

<table>Positioning errors of chambers (<i>E</i>) during five times of scans. (a) Sequence of odd-number scan and even-number scan. (b) Image representation of errors for the chamber at row 3 and column 3. The arrow indicates the target location of alignment marks. With the position control, all alignment marks were maintained at the target locations. Scale bar: 250 <i>μ</i>m. (c)<i> E</i> values of the 32 chambers during the 5 scans. Circles and squares represent the conditions without control and with position control, respectively.</table>

The Scientific World Journal

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Figure 7

Figure 7: Automated Long-Term Monitoring of Parallel Microfluidic Operations Applying a Machine Vision-Assisted Positioning Method 