Cold wall chemical vapor deposition of single walled carbon nanotubes
Bibliographic record
Abstract
Single walled carbon nanotubes (SWNTs) are emerging as a material system for electronics and optoelectronics. Hot wall thermal chemical vapor deposition (CVD) has become a standard method of preparing SWNTs. We have been using a closely related synthesis process, cold wall CVD, to produce SWNTs. Grown materials are characterized by scanning electron microscopy and photoluminescence (PL) spectroscopy. Nanotubes exceeding 150 μm in length are observed, with growth rates of at least 0.5 μm/s. PL was used to confirm the growth of SWNTs, and underscores the suitability of the material for optical and optoelectronic applications. Advantages and disadvantages of the cold wall CVD method will be described. This work shows that the cold wall CVD technique specifically is capable of producing SWNTs, and also demonstrates the use of PL as a characterization tool.
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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 | 0.001 |
| 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".