Optical Band Gap of Nanocompsoite MEH-PPV:TiO[sub 2] Thin Film
Bibliographic record
Abstract
In our work, the white pigment TiO2 powder was first annealed at 450° C before mixing it to the polymer solution to ensure that the TiO2 was in its anatase phase. The 50 mg MEH‐PPV polymer was dissolved in tetrahydrofuran (THF) with a concentration of 1:1. The composite materials were prepared by adding appropriate amounts of TiO2 powder 5, 10, 15 and 20 wt% into the polymer solution to make various ratios of TiO2 powder/polymer composites. The optical band gap and surface morphology of nanocomposite conjugated polymer MEH‐PPV:TiO2 were investigated. We observed that as the concentration of TiO2 increase from 0, 5, 10, 15 and 20 wt%, the optical band gap decrease slightly from 4.20, 4.16, 4.14, 4.13 and 4.12 eV respectively. Also we observed that the dispersity of the TiO2 powder was not uniform as the concentration of the TiO2 powder increase from 0 to 20 wt%.
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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 | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".