Oxidation-assisted ductility in aluminium nanowires (Nature Communications proof)
Evidence and attribution¶
Authority of statements
Prose sections below (Summary, Methods, Findings, etc.) are curated summaries of the publication identified by doi, title, and pdf_path in the front matter above. They are not new primary claims by this wiki.
For definitive numerical values, reaction schemes, and interpretations, use the peer-reviewed article (and optional records under normalized/papers/ when present)—not this page alone.
Summary¶
This corpus entry points at an author proof PDF for the same Nature Communications study as [[2014sen-nat-oxidation-assisted-ductility]] (DOI 10.1038/ncomms4959). The scientific content matches the published narrative: ReaxFF reactive MD on oxidized aluminium nanowires under tensile loading, addressing how a thin amorphous oxide shell couples to plasticity in the metallic core. The work argues for oxidation-assisted ductility relative to bare Al, with mechanisms tied to dislocation nucleation statistics in the core and time-dependent oxygen transport that can heal Al–O bond rupture in the shell when strain rate and oxidation rate remain in a compatible regime—motivated by TEM-informed core–shell morphologies from hot-formed debris. Maintainer mapping of proof vs VOR PDFs: NON_PRIMARY_ARTICLE_PAPER_SLUGS.md.
Methods¶
This slug’s proof PDF duplicates [[2014sen-nat-oxidation-assisted-ductility]] (DOI 10.1038/ncomms4959); Methods mirror the published article—use the version-of-record PDF for pagination.
Reactive MD (Al/O ReaxFF)¶
- ReaxFF simulations model oxidized Al nanowires under tensile loading in vacuum versus oxygen-containing environments, capturing bond rearrangement and oxygen transport in an amorphous oxide shell around a metallic core (Summary).
Structural inspiration from experiment¶
- Core–shell morphologies are motivated by TEM observations of nanowire debris from hot forming (Summary).
Timescale / rate scaling¶
- Oxidation is accelerated relative to laboratory conditions to fit MD accessible times; the article discusses how oxidation rate vs mechanical strain rate are scaled to preserve physically meaningful competition (Summary).
Numerical settings¶
- Timestep, thermostat, system sizes: follow Nat. Commun. Methods/SI—not duplicated on this proof-oriented wiki page.
1 — MD application (proof PDF; same article as VOR)¶
ReaxFF reactive molecular dynamics duplicates the protocol narrative on [[2014sen-nat-oxidation-assisted-ductility]]. Engine, atom counts, PBC, timestep (fs), thermostat, ns-scale equilibration/production, barostat: N/A — not retyped from papers/Sen_Nature_Comm_2014_proof.pdf on this manifest-only page—use the version-of-record sibling for integrated Methods text. Ensemble: NVT staging is typical for the cited ReaxFF tensile/oxidation workflow but N/A — confirm per-stage labels in the published PDF. Pressure / stress: stress–strain metrics appear in the article; hydrostatic pressure servo details — N/A — confirm in pdf_path. Electric field / enhanced sampling: N/A — not used in the summarized protocol class.
Findings¶
The study reports oxidation-assisted ductility for oxidized Al nanowires versus expectations for more brittle oxide-covered metals in some regimes. Nucleation of plasticity shifts to lower flow stress when oxide chemistry provides additional defect sources and activation volumes differ from bulk Al. Oxide shell behavior can become superplastic-like when oxygen diffusion repairs bond breaking during deformation below a critical strain rate, whereas faster straining can outpace healing and change the failure mode. These trends are summarized from the published abstract and main text; prefer the VOR PDF for pagination and figure numbering.
Limitations¶
- This file is tied to a proof PDF; typography and some text fragments in the extract differ slightly from the final Nature Communications layout.
- Page-level anchoring and any proof-specific queries should be checked against the version-of-record PDF where possible; canonical sibling wiki page:
[[2014sen-nat-oxidation-assisted-ductility]].
Relevance to group¶
Duplicate source variant for the same scientific contribution; useful for provenance tracking when the proof PDF is the file present on disk.