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. 2020 Apr 28;10:7127. doi: 10.1038/s41598-020-63330-y

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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The power output of the motor as a function of the external torque for several values of τ. The power goes to zero at G_stall when ω = 0. For each τ there is a maximum power attained. Taking τ₀ as the reference, the values are $G_{stall} \approx 3 k_{B} T r a d^{- 1}$ ; $P_{\max} \approx 42 k_{B} T s^{- 1}$ .