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Cantilever-based ferroelectret energy harvesting

Ben Dali, O. ; Pondrom, P. ; Sessler, G. M. ; Zhukov, S. ; Seggern, H. von ; Zhang, X. ; Kupnik, M. (2024)
Cantilever-based ferroelectret energy harvesting.
In: Applied Physics Letters, 2020, 116 (24)
doi: 10.26083/tuprints-00027713
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Cantilever-based ferroelectret energy harvesting
Language: English
Date: 13 September 2024
Place of Publication: Darmstadt
Year of primary publication: 15 June 2020
Place of primary publication: Melville, NY
Publisher: AIP Publishing
Journal or Publication Title: Applied Physics Letters
Volume of the journal: 116
Issue Number: 24
Collation: 5 Seiten
DOI: 10.26083/tuprints-00027713
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Origin: Secondary publication service
Abstract:

We present a vibrational energy harvester with fluorinated ethylene propylene (FEP)-ferroelectrets working in d₃₁ mode. The ferroelectret film consists of two FEP films, fused together to form a parallel tunnel structure with well-defined air gaps. Its dynamic piezoelectric g₃₁ coefficient is 0.7V mN⁻¹. The energy-harvesting device is an air-spaced cantilever arrangement that was produced by the additive manufacturing technique. The device was tested by exposing it to sinusoidal vibrations with an acceleration a, generated by a shaker. The measurement shows a resonance at about 35 Hz and a normalized output power of 320 μW for a seismic mass of 4.5 g at an acceleration of 0.1 g (g is the gravity of the earth). This demonstrates a significant improvement of air-spaced vibrational energy harvesting with ferroelectrets and greatly exceeds previous performance data for polymer cantilever devices.

Uncontrolled Keywords: Energy harvesting, Cantilever, Dielectric materials
Identification Number: Artikel-ID: 243901
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-277137
Classification DDC: 600 Technology, medicine, applied sciences > 621.3 Electrical engineering, electronics
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Electronic Materials
18 Department of Electrical Engineering and Information Technology > Measurement and Sensor Technology
18 Department of Electrical Engineering and Information Technology > Institute for Telecommunications
Date Deposited: 13 Sep 2024 13:40
Last Modified: 13 Sep 2024 13:41
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/27713
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