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Backholm adapted a unique micropipette measurement technique to gauge the forces acting against the water droplets.

She is an expert on these micropipette force sensors, having used them to measure the growth dynamics of plant roots, the swimming behavior of mesoscopic shrimp swarms, and now in observing the forces in moving water droplets.

The researchers devised a simple yet elegant solution to this problem: using two closely placed micropipettes with an opening as small as just one micrometer, the scientists could create a stable micro-sized droplet of material at the micropipette ends by using one micropipette to dispense the material, while the other suctions it in at a slightly higher rate.

One inexpensive version is the isolation chip, or ichip, which is built from a micropipette tip rack4.

She stabbed the micropipette into the patch, stimulated it, and could hardly believe what she was seeing through her microscope.