Molecular-scale friction at a water–graphene interface and its relationship with slip behavior
Bibliographic record
Abstract
Understanding molecular-scale friction at a liquid–solid interface in a nanofluidic system is essential, as friction affects slip behavior and flow properties at the nanoscale. In this research, we compute the molecular-scale friction at a water–graphene interface, combined with theoretical analysis and Molecular Dynamics (MD) simulation. A solid–solid friction model is modified, regarding a new method to calculate the work done by the substrate. The reliability of the computations is validated by MD results. It is manifested that liquid–solid friction, solid–solid friction, and viscous friction within liquids have similar mechanisms in terms of energy barriers. Moreover, we analyze the relationship between the slip behavior and the friction process and obtain a theoretical foundation between the slip velocity and the friction force based on a classic molecular kinetic theory. This foundation indicates a hyperbolic-like relation between the friction force and the slip velocity for a single water molecule, which is almost linear under realistic experimental conditions. This foundation provides a new way to determine the boundary condition for water flow between graphene sheets.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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) | 0.000 | 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 teacher head, 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".