Atomically precise mechanosynthesis of carbon structures on hydrogenated Si(100) by inverted-mode STM
arxiv.org
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, C$_2$ units are donated from surface-deposited molecules to pre-patterned reactive sites on a hydrogen-passivated Si(100) surface. We demonstrate single-site C$_2$ donation, spatially patterned multi-site C$_2$ 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.

cross-posted from: https://futurology.today/post/10412593

Researchers say they have made a significant step towards Drexlerian nanotechnology - programmable atomically precise manufacturing

  • Onno (VK6FLAB)@lemmy.radioEnglish
    0·
    9 days ago

    If and when this becomes mainstream, we’re going to need better software than OpenSCAD, FreeCAD and Blender to actually design the things you want to build.

  • Brave Little Hitachi Wand@feddit.ukEnglish
    0·
    8 days ago

    Can’t wait for Big Matter. I’ll be able to rent all of my surroundings which will all be slightly incorrect looking, and if I want it all to turn to goo and slither away I can just stop paying! I bet it won’t even cause cancer.

  • haverholm@kbin.earth
    0·
    7 days ago

    LOL, now Discovery’s depiction of 32nd century technology is going to look even more underwhelming.