Sensitivity Enhancement of Printed In<sub>2</sub>O<sub>3</sub> Sensors for H<sub>2</sub>S Gas Detection At Room Temperature
Bibliographic record
Abstract
Flexible hydrogen sulfide (H2S) sensors were fabricated by printing hybrid nanocomposite manufactured from the combination indium oxide nanoparticles (In2O3 NPs), copper acetate monohydrate powder (CuAc), graphite flakes (Gt), and polystyrene (PS). A sensitive sensor to ~100 ppb of H2S gas at room temperature was printed from a nanocomposite composed of In2O3 NPs, Gt, and PS. Enhanced sensitivity to H2S gas detection was achieved at concentrations lower than 100 ppb (<; 100 ppb) with the nanocomposite's modification with CuAc powder. The enhanced sensing performance can be ascribed to copper sulfide (CuS) formation upon the exposure of CuAc to H2S gas molecules. CuS is a highly conductive material that enhances conductivity between neighboring materials and H2S reactions on the sensor's surface. Thus, a reduction in the electrical resistance was recorded upon the sensor's exposure to H2S gas, denoting an enhancement of the sensitivity.
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How this classification was reachedexpand
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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".