Convection in Polymeric Fluids Subjected to Vertical Temperature Gradients
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Bibliographic record
Abstract
We present a study of convection in thin layers of poly(dimethyl siloxane) (PDMS) oligomers end-terminated with different functional groups. In PDMS, silanol-, and aminopropyl-terminated PDMS, surface-tension-driven convection produces ordered hexagonal patterns with a critical wavenumber k ≈ 2. The onset of convection is close to that predicted by a linear theory. In thin films of methacryloxypropyl-terminated PDMS (MAOP-PDMS) surface-tension-driven convection is suppressed, despite the fact that macroscopic physical properties favor this type of convection. In thick films of MAOP-PDMS, mixed surface-tension- and buoyancy-driven convection occurs, generating hexagonal and roll-like patterns. We demonstrate that ordered nonequilibrium patterns induced in the fluid MAOP-PDMS films can be trapped in the solid state by photopolymerization.
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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 it