FIG. 6.

Imaging system field of view, while imaging the microfluidic device with lesser inter-channel spacing. (a) Image captured during the fine focus adjustment of channels using autofocus feature of the cellphone. (b) Image acquired after the auto-focus adjustment is complete. Field of View −196 μm × 180 μm. Length of scale bar is 20 μm. (Multimedia view) [URL: http://dx.doi.org/10.1063/1.4919402.2]Download video file ^{(1.9MB, mov)} DOI: 10.1063/1.4919402.2