# MIT s new fiber muscles contract like real ones — and work without a single moving part

- slug: mit-s-new-fiber-muscles-contract-like-real-ones-and-work-without-a-single-moving-part
- date: 2026-04-09
- category: Robotics

Electrofluidic fiber muscles from MIT match skeletal muscle power density while operating completely silently — no external pump, no motor, no tether. The applications that follow from that are not what you d expect.

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