Microstructure and dynamics of a polymer glass subjected to instantaneous shear strain
Bibliographic record
Abstract
The application of instantaneous shear deformations to a polymer glass modifies the energy landscape of the glass in non-trivial ways. Using molecular dynamics simulations on a freely jointed chain model, we investigate the effect of the strain on the dynamical heterogeneities in the glassy system. The resulting behaviour can be separated into two regimes: elastic for small shear deformations, and plastic for large deformations. Dynamic heterogeneity in the system tends to diminish with deformation. This increased homogenization can be seen, for instance, through changes in the distribution of particle mobilities, both in space and in time, as the glass relaxes following an affine deformation. We are able to directly correlate changes in the overall diffusion in the system with local configurations of mobile and immobile particles. The effect of the deformation on the ageing process is briefly addressed, as we present some new insight into the local dynamics of the polymer chains.
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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".