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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2605.27250 |
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| _version_ | 1866917536649445376 |
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| author | Cowie, Megan Deimert, Chris Groome, Ryan Inayeh, Alex Kirby, Robert J. Mackie, Cameron J. Myall, Jonathan Rohe, Sam Sandoval, Luis Sayed-Akhmad, Khalil Thanabalasingam, Bheeshmon Wotton, Reid Addou, Rafik Asani, Aly Blue, Brandon Bottomley, Adam Clarcia, Kareem A. Enright, Tyler Fan, James Zhangming Freitas Jr., Robert A. Godfrey, Alan T. K. Guo, Si Yue Hill, Aru Huff, Taleana Jobes, Mark Ma, Hadiya Maahs, Adam C. MacLean, Oliver Maley, Steven M. Marshall, Michael McCallum, Terry Merkle, Ralph C. Morin, Mathieu Plumadore, Ryan Rodriguez, Henry Savoie, Marc Scheffel, Benjamin Wong, Janice L. Allis, Damian G. Barton, Jeremy Drew, Michael Kennedy, Matthew R. Takatani, Tait Taucer, Marco Vobornik, Dusan Yamachika, Ryan Durand, Mathieu |
| author_facet | Cowie, Megan Deimert, Chris Groome, Ryan Inayeh, Alex Kirby, Robert J. Mackie, Cameron J. Myall, Jonathan Rohe, Sam Sandoval, Luis Sayed-Akhmad, Khalil Thanabalasingam, Bheeshmon Wotton, Reid Addou, Rafik Asani, Aly Blue, Brandon Bottomley, Adam Clarcia, Kareem A. Enright, Tyler Fan, James Zhangming Freitas Jr., Robert A. Godfrey, Alan T. K. Guo, Si Yue Hill, Aru Huff, Taleana Jobes, Mark Ma, Hadiya Maahs, Adam C. MacLean, Oliver Maley, Steven M. Marshall, Michael McCallum, Terry Merkle, Ralph C. Morin, Mathieu Plumadore, Ryan Rodriguez, Henry Savoie, Marc Scheffel, Benjamin Wong, Janice L. Allis, Damian G. Barton, Jeremy Drew, Michael Kennedy, Matthew R. Takatani, Tait Taucer, Marco Vobornik, Dusan Yamachika, Ryan Durand, Mathieu |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_27250 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Atomically precise mechanosynthesis of carbon structures on hydrogenated Si(100) by inverted-mode STM Cowie, Megan Deimert, Chris Groome, Ryan Inayeh, Alex Kirby, Robert J. Mackie, Cameron J. Myall, Jonathan Rohe, Sam Sandoval, Luis Sayed-Akhmad, Khalil Thanabalasingam, Bheeshmon Wotton, Reid Addou, Rafik Asani, Aly Blue, Brandon Bottomley, Adam Clarcia, Kareem A. Enright, Tyler Fan, James Zhangming Freitas Jr., Robert A. Godfrey, Alan T. K. Guo, Si Yue Hill, Aru Huff, Taleana Jobes, Mark Ma, Hadiya Maahs, Adam C. MacLean, Oliver Maley, Steven M. Marshall, Michael McCallum, Terry Merkle, Ralph C. Morin, Mathieu Plumadore, Ryan Rodriguez, Henry Savoie, Marc Scheffel, Benjamin Wong, Janice L. Allis, Damian G. Barton, Jeremy Drew, Michael Kennedy, Matthew R. Takatani, Tait Taucer, Marco Vobornik, Dusan Yamachika, Ryan Durand, Mathieu Materials Science 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. |
| title | Atomically precise mechanosynthesis of carbon structures on hydrogenated Si(100) by inverted-mode STM |
| topic | Materials Science |
| url | https://arxiv.org/abs/2605.27250 |