تقرير
Universal map of gas-dependent kinetic selectivity in carbon nanotube growth
| العنوان: | Universal map of gas-dependent kinetic selectivity in carbon nanotube growth |
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| المؤلفون: | Otsuka, K., Ishimaru, R., Kobayashi, A., Inoue, T., Xiang, R., Chiashi, S., Kato, Y. K., Maruyama, S. |
| المصدر: | ACS Nano 16, 5627 (2022) |
| سنة النشر: | 2021 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Physics - Applied Physics, Condensed Matter - Materials Science |
| الوصف: | Single-walled carbon nanotubes have been a candidate for outperforming silicon in ultrascaled transistors, but the realization of nanotube-based integrated circuits requires dense arrays of purely semiconducting species. Control over kinetics and thermodynamics in tube-catalyst systems plays a key role for direct growth of such nanotube arrays, and further progress requires the comprehensive understanding of seemingly contradictory reports on the growth kinetics. Here, we propose a universal kinetic model and provide its quantitative verification by ethanol-based isotope labeling experiments. While the removal of carbon from catalysts dominates the growth kinetics under a low supply of precursors, our kinetic model and experiments demonstrate that chirality-dependent growth rates emerge when sufficient amounts of carbon and etching agents are co-supplied. As the model can be extended to create kinetic maps as a function of gas compositions, our findings resolve discrepancies in literature and offer rational strategies for chirality selective growth for practical applications. Comment: 9 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1021/acsnano.1c10569 |
| الوصول الحر: | http://arxiv.org/abs/2111.08411Test |
| رقم الانضمام: | edsarx.2111.08411 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1021/acsnano.1c10569 |
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