Breakthrough in Atomically Precise Manufacturing: 47-Author Team Demonstrates Programmable Carbon Mechanosynthesis on Silicon — 696 Upvotes on r/singularity

r/singularity / arXiv·high signal

A 47-author research team including nanotechnology pioneers Robert Freitas Jr. and Ralph Merkle published 'Atomically precise mechanosynthesis of carbon structures on hydrogenated Si(100)' (arXiv 2605.27250, submitted May 26). The paper demonstrates three progressive capabilities: individual C₂ molecule placement at specific sites, patterned multi-site donations, and sequential assembly of polyyne chains via controlled carbon-carbon bonding using inverted-mode STM. This represents the most concrete step toward Drexlerian programmable nanotechnology ever demonstrated, moving from theory to experimental validation.