Microdomain Orientation of Diblock Copolymer Ultrathin Films Solvent Annealed at Low Temperatures
Bibliographic record
Abstract
The effect of temperature during solvent annealing on the microdomain orientation of block copolymer ultrathin films was investigated using symmetric polystyrene- block -poly(methyl methacrylate) diblock copolymers. When acetone solvent annealing was performed at low temperatures, 2 °C, 38% of samples exhibited a pattern of cylinders perpendicular to the substrate, while 62% of the samples exhibited a mixture of cylinders orientated parallel and perpendicular to the substrate. In the case of acetone solvent annealing at room temperature, only 6% of samples exhibited a pattern with cylinders perpendicular to the substrate, while 73% of the samples exhibited a mixture of cylinders orientated parallel and perpendicular to the substrate. We discuss how the morphology is affected by temperature during solvent annealing. The low-temperature method was used to pattern cylinders perpendicular to the substrate using PS- b -PMMA copolymers with molecular weight ranging from 52 000 g/mol per block to 160 000 g/mol per block.
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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".