Noise energy harvesting in buckled BN nanoribbons from molecular dynamics

M Lopez-Suarez and G Abadal and L Gammaitoni and R Rurali, NANO ENERGY, 15, 329-334 (2015).

DOI: 10.1016/j.nanoen.2015.04.021

We present molecular dynamics calculations of a h-BN nanoribbon designed for vibrational energy harvesting. We calculate the piezoelectric voltage generated at the ends of the device as a function of time and for different levels of an external compressive strain. Through the full atomistic description of the nanoribbon dynamics we demonstrate that driving the system into a non-linear dynamical regime greatly increases its harvesting efficiency. A comparative analysis of the piezo-voltage dependence on the compressive strain, obtained from a previously reported description of the nanoribbon dynamics and from the more accurate molecular dynamics, reveals that the method here presented gives a more precise description of the effect of in-plane vibration of the atoms on the harvesting performance of the device. (C) 2015 Elsevier Ltd. All rights reserved.

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