Onset and manipulation of self-assembled morphology in freely standing polymer trilayer films
Bibliographic record
Abstract
We have used reflected light microscopy to study the lateral morphology which self-assembles at elevated temperatures in films consisting of a polyisoprene (PI) layer capped on both sides by polystyrene (PS) layers: freely standing PS/PI/PS trilayer films. Heating of the trilayer films causes the formation of a periodic, lateral morphology which is driven by the attractive dispersion interaction acting across the film. In our studies of the temperature dependence of the morphology, we find that the onset temperature for the formation of the morphology increases with increasing heating rate. By heating the films to temperatures greater than the glass transition temperature of the PS-capping layers, the morphology is removed. By heating and then cooling the films, the morphology formed upon heating disappears and reforms at right angles to the original morphology with a larger periodicity characteristic of the lower temperature. These results can be explained by considering the time and temperature dependence of Young's modulus of PS.
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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".