A recent Medgadget article discussed an innovative new method for collecting sweat for biomedical analysis that was inspired by an unlikely source: cacti. Apparently a team of researchers at South Korea’s Pohang University of Science and Technology examined the way the spines of cacti draw tiny amounts of water from their tip to their base and applied it to a tiny patch. This is doable thanks to a unique phenomenon known as Laplace pressure, where a pressure differential between the inside and outside of a water droplet mobilizes it along the spine.
This Sweat Collection Method Was Inspired by Cacti
Researchers developed a sweat-collecting patch to make continuous biomedical analysis easier.
Nov 15, 2021
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