Size‐Dependent Insulator‐to‐Metal and Metal‐to‐Insulator Phase Transitions in VO<sub>2</sub> Microrods Grown on a Silicon Substrate
Bibliographic record
Abstract
Light scattering from VO 2 microrods (MRs) synthesized on a silicon substrate is studied as a function of temperature and wavelength through the insulator‐to‐metal (IMT) and the metal‐to‐insulator (MIT) transitions. Light scattering exhibits substantial and reproducible changes. By focusing the light on individual MRs, it is shown that for small‐sized MRs (<1 × 10 μm), the IMT and MIT are very sharp with transition temperatures varying within 31–64 °C (IMT) and within 58–76 °C (MIT). In contrast, for large‐sized MRs (≈4 × 40 μm), only the IMT at 68 °C is sharp, whereas MIT is stretched with a prominent low‐temperature shoulder at 35–50 °C. The observed phenomena are assumed to be connected with the external substrate‐induced mechanical stress emerging during the phase transition. A simple model is developed to explain both the temperature‐stretched MIT and the low‐temperature shoulder.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 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".