Get a Grip

Balloon filled with ground coffee makes ideal robotic gripper

Particulate materials have a so-called jamming transition, which turns their behavior from fluid-like to solid-like when the particles can no longer slide past each other.

This phenomenon is familiar to coffee drinkers familiar with vacuum-packed coffee, which is hard as a brick until the package is unsealed.

Pretty neat (other than the part where they talk about a vacuum sucking the air out — it’s the external pressure that forces the air movement.)

One thought on “Get a Grip

  1. So when is the word ‘suck’ used appropriately (trying not to sound dirty, here)? Can’t there be a colloquial usage if we know what it actually means?

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