Enhanced first-order Raman scattering from arrays of vertical silicon nanowires
Bibliographic record
Abstract
Vertical ordered silicon nanowire arrays with diameters ranging from 30 to 60 nm are fabricated and display enhanced Raman scattering. The first-order 520 cm(-1) phonon mode shows no significant shift or peak broadening with increasing laser power, suggesting that the excellent defect-free diamond crystalline structure and thermal properties of bulk silicon are maintained. The Raman enhancement per unit volume of the first-order phonon peak increases with increasing nanowire diameter, and has maximum enhancement factors of 7.1 and 70 when compared to the original silicon on insulator (SOI) and bulk silicon wafers, respectively. For the array with 60 nm diameter nanowires, the total Raman intensity is larger than that of the SOI wafer. The results are understood using a model based on the confinement of light and are supported by finite difference time domain (FDTD) simulations.
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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) | 0.000 | 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 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".