Compact Poly/Monochromatic Colorimetric Sensing System With Integrated Microfluidic Sampler
Bibliographic record
Abstract
This work describes a new hybrid colorimetric sensor instrument that combines a monochromator and a polychromator to achieve high spectral resolution in a reduced size, at low cost and ease of use. The system design uses an integrated subsystem approach with optical spectrometry, microfluidic micromixing, and microsampling components, emphasizing autonomous sample manipulation and analysis. A comprehensive description of the sensor’s design is presented, detailing the optical, microfluidic, electronic, and mechanical aspects. This compact and autonomous sensor heralds promising applications across chemistry, with a comparable accuracy to that of commercial instruments. The reported theoretical resolution of the polychromator is 0.24 nm while the measured resolving power is 100 for a bandwidth of 118 nm centered at 557.7 nm. The monochromator has a 16-bit resolution for a bandpass of 10 nm. The average difference between the measured absorbance curves by a Cary-7000 commercial spectrometer and our instrument is 14.55 ($\text {A}\cdot \lambda $).
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".