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IRZ archive, page 19.

The Ice Dart drone anchored to the blue slope of an iceberg in Iceland

This drone hits the ice so it can stop flying

Ice Dart is not designed to hover above an iceberg. It absorbs impact, drives eight spines into the ice and uses reverse thrust to become a fixed sensor on slopes approaching 60 degrees.

To control an excavator, MIT built a miniature one

Two joysticks force an operator to translate intent into four machine joints. MIT's World-Space Interface copies the excavator geometry so software can perform that translation instead.

Complex geometries made by implosion carving in hydrogel, including a butterfly-wing-inspired structure and a helix

2,000× smaller? Only if you count volume

MIT carves empty space into a swollen hydrogel, then shrinks it. The 2,000× figure is volume; roughly 13× linear shrinkage pushes features below 100 nm.