Processing Solvents, Poling Conditions, and Fully Solution‐Processed Polymeric Multilayer Piezoelectric Devices
Why this work is in the frame
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Bibliographic record
Abstract
ABSTRACT Our group has recently demonstrated the first fully solution‐processed polymeric multilayer piezoelectric devices. The key challenge, that is, the effective control of the redissolution issue, has been overcome using a solvent that offers adequate solubility but extremely slow dissolution for the piezoelectric polymer, poly(vinylidene fluoride‐trifluoroethylene) [P(VDF‐TrFE)]. Several qualified solvents have been identified. Here, we comparatively study the effects of solvents on piezoelectric performance and production yield, for choosing the right solvent for fully solution‐processed multilayer piezoelectric devices. Each solvent exhibits distinct yield dependence on drying temperature, but the maximal yields achieved are independent of processing solvents. The solvents are also found to be interchangeable in terms of piezoelectric performance. The drying temperature and final annealing temperatures are identified to be decisive factors. The former only impacts the yield, and the latter only impacts the performance. The three parameters that define a poling condition are all investigated for the first time. A procedure enabling a fast identification of the right poling condition is proposed. Fully solution‐processed P(VDF‐TrFE) multilayer piezoelectric devices are prepared using the optimized conditions, and the dependence of the performance and yield on the number of layers is demonstrated. This work lays the foundation for producing such devices for practical applications.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| 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