Atomic structure and friction of ultrathin films of KBr on Cu(100)
Bibliographic record
Abstract
The frictional properties of ultrathin films of KBr on a Cu(100) substrate have been studied on the atomic scale by means of friction force microscopy. Films as thin as two atomic layers support the sliding tip and exhibit atomic stick-slip friction similar to cleaved surfaces of bulk KBr. Steps on the film are prone to wear, while substrate steps overgrown by the film are found to be stable. The interpretation of these results is supported by a detailed analysis of the structure of the films by means of atomic-resolution noncontact force microscopy. The films are found to be compressively strained by $1.0\ifmmode\pm\else\textpm\fi{}0.2\phantom{\rule{0.2em}{0ex}}%$. They exhibit a regular superstructure originating from the interference of lattice constants at the substrate-film interface, which also causes a weak modulation of the frictional response. Monolayer films of KBr are subject to significant wear when imaged in contact-mode force microscopy. Noncontact imaging confirms that these monolayers are rich in defects.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".