A User-Centered Approach in the Development of a Label-Free Impedimetric Chemiresistor for H <sub>2</sub> O <sub>2</sub>
Bibliographic record
Abstract
High Resolution Image Download MS PowerPoint Slide A strong focus on laboratory optimization in new sensing technology often delays and sometimes prevents successful real-world implementation. Accordingly, we present a proof-of-concept impedimetric chemiresistor (ICR) for a noninvasive, point-of-care device that combines the development of a novel electrochemical sensing modality with a user-centered approach. The ICR features a two-electrode design fabricated by using a low-cost, scalable roll-to-roll (R2R) flexographic printing technique and a zeolitic imidazolate framework-8 (ZIF-8) chemiresistive channel. Here, we demonstrated the ICR’s response to hydrogen peroxide (H 2 O 2 ) as an initial step toward a noninvasive hypoglycemia diagnostic tool. The ICR exhibits a linear impedance response to H 2 O 2, with a limit-of-detection of 3.7 mM, a dynamic range of 4–60 mM, and preliminary validation in human saliva. Early user feedback guided device design and highlighted how incorporating usability throughout development supports the successful transition from a lab prototype to a real-world healthcare technology.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.002 |
| 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) | 0.000 | 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".