# 214. 3D Printing Robot Muscles

- Show: [The Next Byte Podcast](https://hardwarepodcasts.com/podcast/the-next-byte-podcast)
- Published: 2025-03-11
- Length: 18m
- Page: https://hardwarepodcasts.com/podcast/the-next-byte-podcast/2025-03-11-214-3d-printing-robot-muscles
- Listen: https://the-next-byte-wevolver.simplecast.com/episodes/214-3d-printing-robot-muscles-f6eAkWC6

## Summary

The hosts discuss research from Harvard and the Department of Energy on 3D printing liquid crystal elastomers (LCEs) to create programmable 'robot muscles.' They explain how aligning liquid crystals via specific nozzle geometries and printing parameters allows the material to contract predictably when heated. The conversation highlights the use of in-situ X-ray microbeam analysis to optimize these parameters, effectively creating a 'recipe' for reliable soft robotic actuators. The hosts also briefly touch on the broader implications for composite materials and aerospace manufacturing, mentioning Ed Mayer and Machino Labs.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/the-next-byte-podcast/2025-03-11-214-3d-printing-robot-muscles#t=0) Introduction and Soft Robotics Overview
- [2:32](https://hardwarepodcasts.com/podcast/the-next-byte-podcast/2025-03-11-214-3d-printing-robot-muscles#t=152) Liquid Crystal Elastomers and Alignment Science
- [6:31](https://hardwarepodcasts.com/podcast/the-next-byte-podcast/2025-03-11-214-3d-printing-robot-muscles#t=391) In-Situ X-Ray Analysis and Parameter Optimization
- [10:30](https://hardwarepodcasts.com/podcast/the-next-byte-podcast/2025-03-11-214-3d-printing-robot-muscles#t=630) Nozzle Geometry and Additive Alignment
- [14:52](https://hardwarepodcasts.com/podcast/the-next-byte-podcast/2025-03-11-214-3d-printing-robot-muscles#t=892) Aerospace Composites and Machino Labs Sidebar

## Topics

- [Materials & manufacturing processes](https://hardwarepodcasts.com/topic/materials-and-processes)
- [Prototyping & iteration](https://hardwarepodcasts.com/topic/prototyping)
- [Robotics & autonomy](https://hardwarepodcasts.com/topic/robotics-and-autonomy)

## Most relevant to

makers and hobbyists

## Mentioned

- Mouser Electronics (company)
- Harvard (company)
- Department of Energy (company)
- Brookhaven National Lab (company)
- Machino Labs (company)
- Ed Mayer (other)
- Boeing (company)
- Airbus (company)

## Related episodes from other shows

- [Ep 324: Ribbon Microphone From A Gumstick, Texture From a Virtual Log, and a Robot Arm From PVC](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-06-07-ep-324-ribbon-microphone-from-a-gumstick-texture-from-a-virtual-log-and-a-robot) (Hackaday Podcast)
- [495: Shortcut the Difficulties of Reality](https://hardwarepodcasts.com/podcast/embedded-fm/2025-02-21-495-shortcut-the-difficulties-of-reality) (Embedded.fm)
- [Yonas Tadesse: 4D Printing, Humanoid Robots, Bionic Humans, AI for Engineers | Hard Tech Podcast #19](https://hardwarepodcasts.com/podcast/hard-tech-podcast/2024-05-26-yonas-tadesse-4d-printing-humanoid-robots-bionic-humans-ai-for-engineers-hard-te) (Hard Tech Podcast)
- [Ep111: 3D Graphics are Ultrasonic, Lobotomizing Alexa, 3D-Printing Leaky Rockets, and Gaming the Font System](https://hardwarepodcasts.com/podcast/hackaday-podcast/2021-03-26-ep111-3d-graphics-are-ultrasonic-lobotomizing-alexa-3d-printing-leaky-rockets-an) (Hackaday Podcast)
- [Ep097: We ♥ MicroMice, the Case of the Missing Drones, and 3D Prints Tested for Rocketry and Food Prep](https://hardwarepodcasts.com/podcast/hackaday-podcast/2020-12-11-ep097-we-micromice-the-case-of-the-missing-drones-and-3d-prints-tested-for-rocke) (Hackaday Podcast)

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