| Autor: |
Il'ina, Marina V., Soboleva, Olga I., Rudyk, Nikolay N., Polyvianova, Maria R., Khubezhov, Soslan A., Il'in, Oleg I. |
| Předmět: |
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| Zdroj: |
Journal of Advanced Dielectrics; Dec2022, Vol. 12 Issue 6, p1-7, 7p |
| Abstrakt: |
Recent studies have shown that nitrogen doping of carbon nanotubes (CNTs) can lead to the formation of piezoelectric properties in them, not characteristic of pure CNTs. In this work, nitrogen-doped CNTs were grown by plasma-enhanced chemical vapor deposition and the effect of the aspect ratio of the nanotube length to its diameter on its piezoelectric coefficient d 3 3 was shown. It was observed that as the aspect ratio of the nanotube increased from 7 to 21, the value of d 3 3 increased linearly from 7.3 to 10.7 pm/V. This dependence is presumably due to an increase in curvature-induced polarization because of an increase in the curvature and the number of bamboo-like "bridges" in the nanotube cavity formed as a result of the incorporation of pyrrole-like nitrogen into the nanotube structure. The obtained results can be used in the development of promising elements of nanopiezotronics (nanogenerators, memory elements, and strain sensors). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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