RF humidity sensor implemented with PEI-coated compact microstrip resonant cell
Bibliographic record
Abstract
This paper presents a novel application of RF Compact Microstrip Resonant Cells (CMRC) coated with polyethylenimine (PEI) to form a high performance RF relative humidity (%RH) sensor. The single-port, short-circuit terminated CMRC sensor cell is coated with 5 uL of 10 w.t.% PEI diluted in methanol, and is coupled to the ultra-micro coaxial connector (UMCC) through a direction transmission line. The PEI coating coming in contact with humid air undergoes changes in both physical volume and dielectric constant, thereby shifting the resonant frequency of the CMRC sensor. The return loss (S11) measured near the resonant frequency of the sensor has seen an average humidity sensitivity of −16.2 mdB / %RH, with great linearity across the full range of relative humidity levels. All measurements are done at atmospheric temperature and pressure (ATM).
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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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".