Atomically precise mechanosynthesis of carbon structures on hydrogenated Si(100) by inverted-mode STM
2026/05/26 by Megan Cowie, Chris Deimert, Ryan Groome +44 · 11 voices · 3 citations
#cond-mat.mtrl-sci
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Abstract
The ability to build atomically precise structures on surfaces with complete control over both atomic placement and chemical bonding remains a central challenge in nanoscale fabrication. Here, we demonstrate simultaneous spatial and chemical control over the mechanosynthetic fabrication of carbon structures. Using inverted-mode STM, C2 units are donated from surface-deposited molecules to pre-patterned reactive sites on a hydrogen-passivated Si(100) surface. We demonstrate single-site C2 donation, spatially patterned multi-site C2 donation, and the stepwise assembly of polyyne structures through successive C-C bond formation. Together, these results establish controlled mechanosynthetic donation as a foundational capability for programmable atomically precise fabrication.
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- Atomically precise mechanosynthesis of carbon structures on hydrogenated Silicon [hn, 57 points, 9 comments]
- It's happening arxiv.org/abs/2605.27250 [bsky, 50 points, 4 comments]
- Then dig this - arxiv.org/abs/2605.27250 [bsky, 2 points, 1 comments]
- Atomically Precise Manufacturing "nanotech" is still being researched. " Here, we demonstrate simultaneous spatial and chemical control over the mechanosynthetic fabrication of carbon structures" arxi [bsky, 2 points, 0 comments]
- Atomically precise mechanosynthesis of carbon structures on hydrogenated Silicon https://arxiv.org/abs/2605.27250 [bsky, 0 points, 0 comments]
- Atomically precise mechanosynthesis of carbon structures on hydrogenated Silicon https:// arxiv.org/abs/2605.27250 # arxiv [mastodon, 0 points, 0 comments]
- A recent study illustrates atomically precise mechanosynthesis of carbon structures on hydrogenated Si(100) via inverted-mode STM. Researchers achieved C₂ unit donations and stepwise assembly of polyy [bsky, 0 points, 0 comments]
- Atomically precise mechanosynthesis of carbon structures on hydrogenated Silicon https://arxiv.org/abs/2605.27250 (https://news.ycombinator.com/item?id=48292560) [bsky, 0 points, 0 comments]
- Atomically precise mechanosynthesis of carbon structures on hydrogenated Si(100) by inverted-mode STM arxiv.org/abs/2605.27250 [bsky, 0 points, 0 comments]
- Atomically precise mechanosynthesis of carbon structures on hydrogenated Silicon https://arxiv.org/abs/2605.27250 (https://news.ycombinator.com/item?id=48292560) [bsky, 0 points, 0 comments]
- That may change for you at some point. This paper just came out. It's still a long shot, but the people involved are for real. Still a ways off before demand ramps up even if it works out. arxiv.org/p [bsky, 0 points, 0 comments]
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