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. 2015 Jan 29;9(1):014111. doi: 10.1063/1.4906905

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1932-1058/2015/9(1)/014111/20/$30.00

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FIG. 3. — (a1) Schematic of experimental arrangement for force measurement of C. elegans moving on agarose surface with a drop of M9 buffer. (a2) Image of worm in between colored PDMS micropillars. (a3) Same image as “a2” after tracking the pillar tip motion using matlab code, green overlay is applied to selected pillars. Green boundary indicates the reference position, while white boundary is the deflected position of pillar tip. (b1) Schematic of experimental setup for measurement of force exerted by D. melanogaster larva. (b2) Image of the larva recorded using non-colored PDMS micropillars and back illumination. (b3) Image of the larva recorded using non-colored PDMS micropillars and side illumination. (b4) Image of the larva recorded using colored PDMS micropillars and side illumination. Pillars are clearly visible only with the colored device. Figures 3(b1), 3(b2), 3(b3), and 3(b4) reprinted with permission from Khare et al., 18th International conference on Miniaturized Systems for Chemistry and Life Sciences, 2014. Copyright 2014 The Chemical and Biological Microsystems Society.