TECHNOLOGY

The Technology

The Core Problem

Von Neumann self-replicating probes assume a friendly environment — constant temperature, atmospheric pressure, abundant water. The Moon is none of these.

Our core question: is there a self-replicating manufacturing paradigm that works without water, without Earth-like temperature, and without atmosphere?

Path 1: Molten Salt Electrolysis (FFC Cambridge)

TRL 5-6 · Most mature path · Demonstrated 2000–2025

The FFC Cambridge process uses molten CaCl₂ at ~900°C to directly electrolyze lunar regolith oxides, producing both metals and oxygen simultaneously. Discovered by Chen, Fray & Farthing in Nature (407, 361-364, 2000), it has been refined over 25 years.

Key Papers

  • • Chen, Fray & Farthing, Nature 407, 361–364 (2000) — Foundational paper
  • • "Lower temperature electrochemical reduction of lunar regolith," Planetary & Space Science (2022) DOI: 10.1016/j.pss.2021.105326
  • • "FFC Cambridge Process and Metallic 3D Printing for Deep ISRU," Carleton University (2017) — Full pipeline validation
  • • "Characterization of metal products from MSE of lunar regolith," Acta Astronautica (2025) DOI: 10.1016/j.actaastro.2025.01.037 — Latest metal product analysis
  • • "Identifying efficient endpoint for oxygen extraction from lunar regolith," Acta Astronautica (2025) 2025AcAau.234..287L

Path 2: Ionic Liquids

Ionic liquids are room-temperature molten salts with negligible vapor pressure (vacuum stable) and a working range of -100°C to +400°C. They serve as media for electrodeposition and sol-gel processing in vacuum, and are fully recyclable.

Key Papers

  • • Todd & Kelly, "Ionic liquids for space applications," JBIS (2021)
  • • "Self-Assembled Nanostructures in Aprotic ILs," ACS Appl. Mater. (2023) DOI: 10.1021/acsami.3c08606
  • • "The Novel Ionic Liquid Self-Assembly in Energy Storage," PMC11935792 (2025)
  • • "Use of Ionic Liquid Under Vacuum Conditions," IntechOpen (2013)

Path 3: Vapor Deposition (CVD/PVD)

Zero-solvent manufacturing, already used at scale in the semiconductor industry. NASA developed laser-directed CVD for refractory metal 3D printing (2023). In 2025, Nature published a self-driving PVD system with Bayesian ML optimization (DOI: 10.1038/s41524-025-01805-0).

Key References

  • • "In-Space Manufacturing of Self-Replicating Machines," Tech Briefs (2024)
  • • "A self-driving PVD system with Bayesian ML," Nature (2025)
  • • NASA "Laser-Directed CVD 3D Printing for Refractory Metals," TechPort (2023)

Path 4: Integrated FFC + Additive Manufacturing

Alex Ellery (Carleton University) is the only researcher who connected the complete chain: molten salt → metal powder → 3D printing → self-replication. His core argument (DOI: 10.2514/1.A33409, cited 72+ times) shows that existing 3D printing technology (RepRap paradigm) can serve as a universal constructor, with lunar ISRU as its natural application.

Key gap: no one has yet demonstrated the complete non-water self-replication cycle in an integrated system. This is what we aim to do.

Design Philosophy

Operating System

The factory software follows OS design: a microkernel protocol layer with manufacturing modules as user-space processes negotiating resources via consensus.

Self-Organizing Network

Each factory module is an independent AI agent coordinating via Emergence Science's Surprise Protocol — an information-theoretic signal for unexpected patterns.

Intelligent Manufacturing

Digital twin + reinforcement learning + predictive maintenance. Every machine has a simulation twin running ahead of real time.

AI-Native

AI-native from day one — not a manual factory retrofitted with AI. Sensors, actuators, control loops, and decisions all built for autonomous operation.