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Effect of electric field on mechanical behavior of vertically-aligned carbon nanotube structures

Jagtap, P and Kumar, P (2023) Effect of electric field on mechanical behavior of vertically-aligned carbon nanotube structures. In: Proceedings of the Indian National Science Academy .

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Official URL: https://doi.org/10.1007/s43538-023-00161-1


Here, we summarize various reports on the mechanical response of vertically aligned carbon nanotubes forest (CNTF) structures under an applied electric field. Quasi-static compression tests on CNTF structures show a dramatic strengthening by application of the electric field both in low-strain (linear) and high strain (nonlinear) regimes. The CNTF structures also show a finite hysteresis, i.e., energy dissipation, in stress–strain behavior during a loading–unloading cycle. Tests demonstrate that the application of an electric field can tailor the energy absorption capacity of CNTF structures. In practice, the energy absorption capacity of CNTF structures increases by several folds when the loading and unloading (under quasi-static strain rates) are performed in the presence and the absence of the electric field, respectively. However, the improvement in the energy absorption capacity decreases drastically at higher strain rates. Additionally, applying an electric field improves the creep resistance of the CNTF structures. Overall, the summarized studies show promising electro-mechanical properties of CNTF structures which are helpful in developing the next generation of nano-and micro-electro-mechanical devices and sensors.

Item Type: Journal Article
Publication: Proceedings of the Indian National Science Academy
Publisher: Springer Nature
Additional Information: The copyright for this article belongs to Springer Nature.
Keywords: Compression testing; Electric fields; Electromechanical devices; Energy absorption; Energy dissipation; MEMS; Nanocrystals; Strain rate; Stress analysis; Unloading, Aligned CNTs; Carbon nano-tube structures; Effects of electric fields; Energy absorption capacity; Forest structure; Mechanical behavior; Nanotube forests; Vertically aligned; Vertically aligned carbon nanotube; Vertically aligned CNT, Carbon nanotubes
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 25 Apr 2023 06:35
Last Modified: 25 Apr 2023 06:35
URI: https://eprints.iisc.ac.in/id/eprint/81268

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