High temperature polymer capacitors for aerospace applications
Bibliographic record
Abstract
Due to the need for reducing system size and weight while increasing performance, many military and commercial systems today require high-temperature electronics to run actuators, high-speed motors or generators. Of the many passive devices required to satisfy the needs for a complete high temperature system, none has been more problematic than the capacitor, particularly for larger devices requiring values of several micro- or milli-farads. Here we introduce a polymer metal composite we have recently developed that meets typical aerospace design constraints of high reliability, robustness, light-weight, as well as high temperature (up to 300°C) operation. Our recent discovery of the capacitive behaviour in perfluorinated sulfonic acid polymers sandwiched between metal electrodes has lead to the exciting development of high temperature capable high density passive storage components. These composites exhibit capacitance per unit planar area of ~1.0 mF cm-2 or 40 mF/g for a ~100 μm-thick polymer substrate, with only a small predictable decrease in capacitance immediately after heating to 100°C followed by constant capacitance up to 300°C. Here we report the design and testing of single step microfabrication of metal electrodes to these polymer composites sandwiched between two thin metal films along with their performance at high temperatures.
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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 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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".