Droplets Through a Forest

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Words over a backdrop of colorful droplets flowing past cylindrical posts. Text reads, "How do droplets move through porous media?"

Image divided in three sections. On the left, green droplets flowing through posts. On the right, large pink droplets flowing through posts. In the center on a black background, an illustration of a blue drop touching a post. Text reads, "As droplets move in, we measure their area and velocity at the moment of contact with an obstacle."

Against a backdrop of colorful droplets, text reads, "By adding glycerol to the droplets, we can see the fluid mixing during coalescence. Otherwise, it happened too fast!"

When droplets flow through a forest of microfluidic posts, they can deform around the obstacle or break up into smaller droplets. Here, researchers explore the factors that control the outcome, as well as when droplets collide, coalesce, and mix. (Video and image credit: D. Meer et al.)

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2025gofm coalescence droplet breakup droplets flow visualization fluid dynamics physics porous media science

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One response to “Droplets Through a Forest”

December 29, 2025
John Faithfull 🌍🇪🇺🏴󠁧󠁢󠁳󠁣󠁴󠁿🧡✊🏻✊🏿
@admin Fascinating – thanks! 🙏 Makes me wonder about similar growth/splitting effects in porous media where the porosity is low (eg in magmatic crystal mushes) with either bubbles, or immiscible sulfide melt…

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