Noise energy harvesting in buckled BN nanoribbons from molecular dynamics. (July 2015)
- Record Type:
- Journal Article
- Title:
- Noise energy harvesting in buckled BN nanoribbons from molecular dynamics. (July 2015)
- Main Title:
- Noise energy harvesting in buckled BN nanoribbons from molecular dynamics
- Authors:
- López-Suárez, Miquel
Abadal, Gabriel
Gammaitoni, Luca
Rurali, Riccardo - Abstract:
- Abstract: 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. Graphical abstract: Highlights: We have studied the dynamics of a h-BN armchair nanoribbon as a function of an applied compressive strain for energy harvesting applications by means of atomistic molecular dynamics calculations. This is a simple and compact design for nanoscale ambient vibration harvesting, as the mechanical oscillator operates simultaneously as a piezoelectric transducer. Our calculations show that engineered non-linearities greatly increase the device performances in terms of harvested power, which can be as high as 8 pW. Importantly, the unification of the mechanical and the electromechanical transducer elements in one single materialAbstract: 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. Graphical abstract: Highlights: We have studied the dynamics of a h-BN armchair nanoribbon as a function of an applied compressive strain for energy harvesting applications by means of atomistic molecular dynamics calculations. This is a simple and compact design for nanoscale ambient vibration harvesting, as the mechanical oscillator operates simultaneously as a piezoelectric transducer. Our calculations show that engineered non-linearities greatly increase the device performances in terms of harvested power, which can be as high as 8 pW. Importantly, the unification of the mechanical and the electromechanical transducer elements in one single material structure not only simplifies a possible fabrication process, but also broadens the range of compression that increases the device performance. … (more)
- Is Part Of:
- Nano energy. Volume 15(2015:Jul.)
- Journal:
- Nano energy
- Issue:
- Volume 15(2015:Jul.)
- Issue Display:
- Volume 15 (2015)
- Year:
- 2015
- Volume:
- 15
- Issue Sort Value:
- 2015-0015-0000-0000
- Page Start:
- 329
- Page End:
- 334
- Publication Date:
- 2015-07
- Subjects:
- Energy harvesting -- Non-linear oscillators -- Boron nitride -- Molecular dynamics
Nanoscience -- Periodicals
Nanotechnology -- Periodicals
Nanostructured materials -- Periodicals
Power resources -- Technological innovations -- Periodicals
Nanoscience
Nanostructured materials
Nanotechnology
Power resources -- Technological innovations
Periodicals
621.042 - Journal URLs:
- http://www.sciencedirect.com/science/journal/22112855 ↗
http://www.sciencedirect.com/ ↗ - DOI:
- 10.1016/j.nanoen.2015.04.021 ↗
- Languages:
- English
- ISSNs:
- 2211-2855
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 23576.xml