Three-layer ferroelectrets from perforated Teflon®-PTFE films fused between two homogeneous Teflon®-FEP films

H. C. Basso; R. A.P. Altafim; R. A.C. Altafim; A. Mellinger; Peng Fang; W. Wirges; R. Gerhard

doi:10.1109/CEIDP.2007.4451625

Three-layer ferroelectrets from perforated Teflon®-PTFE films fused between two homogeneous Teflon®-FEP films

H. C. Basso, R. A.P. Altafim, R. A.C. Altafim, A. Mellinger, Peng Fang, W. Wirges, R. Gerhard

Physics

Research output: Contribution to journal › Conference article › peer-review

13 Scopus citations

Abstract

In this contribution, we propose a new route towards polymer ferroelectrets with uniform voids: Two homogeneous Teflon®-FEP films are separated by, but also thermally fused to a Teflon®-PTFE film with several homogeneous holes. Closed voids with FEP top and bottom lids and PTFE walls are thus formed. After internally charging the top and bottom FEP layers with positive and negative polarity, respectively, the voids constitute large dipoles that can be deformed by mechanical or electrical stresses. Consequently, the three-layer sandwich exhibits direct and inverse piezoelectricity. The continuous layer-fusing process involves a press with hot cylindrical rolls that operate at temperatures up to 310 °C, which may allow production of inexpensive transducer materials on a large scale. We report about the concept, the processing, the charging and the electromechanical performance of the three-layer ferroelectrets.

Original language	English
Article number	4451625
Pages (from-to)	453-456
Number of pages	4
Journal	Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
DOIs	https://doi.org/10.1109/CEIDP.2007.4451625
State	Published - 2007
Event	2007 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP - Vancouver, BC, Canada Duration: Oct 14 2007 → Oct 19 2007

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10.1109/CEIDP.2007.4451625

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Basso, H. C., Altafim, R. A. P., Altafim, R. A. C., Mellinger, A., Fang, P., Wirges, W., & Gerhard, R. (2007). Three-layer ferroelectrets from perforated Teflon®-PTFE films fused between two homogeneous Teflon®-FEP films. Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP, 453-456. [4451625]. https://doi.org/10.1109/CEIDP.2007.4451625

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abstract = "In this contribution, we propose a new route towards polymer ferroelectrets with uniform voids: Two homogeneous Teflon{\textregistered}-FEP films are separated by, but also thermally fused to a Teflon{\textregistered}-PTFE film with several homogeneous holes. Closed voids with FEP top and bottom lids and PTFE walls are thus formed. After internally charging the top and bottom FEP layers with positive and negative polarity, respectively, the voids constitute large dipoles that can be deformed by mechanical or electrical stresses. Consequently, the three-layer sandwich exhibits direct and inverse piezoelectricity. The continuous layer-fusing process involves a press with hot cylindrical rolls that operate at temperatures up to 310 °C, which may allow production of inexpensive transducer materials on a large scale. We report about the concept, the processing, the charging and the electromechanical performance of the three-layer ferroelectrets.",

author = "Basso, {H. C.} and Altafim, {R. A.P.} and Altafim, {R. A.C.} and A. Mellinger and Peng Fang and W. Wirges and R. Gerhard",

year = "2007",

doi = "10.1109/CEIDP.2007.4451625",

language = "English",

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journal = "Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP",

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T1 - Three-layer ferroelectrets from perforated Teflon®-PTFE films fused between two homogeneous Teflon®-FEP films

AU - Basso, H. C.

AU - Altafim, R. A.P.

AU - Altafim, R. A.C.

AU - Mellinger, A.

AU - Fang, Peng

AU - Wirges, W.

AU - Gerhard, R.

PY - 2007

Y1 - 2007

N2 - In this contribution, we propose a new route towards polymer ferroelectrets with uniform voids: Two homogeneous Teflon®-FEP films are separated by, but also thermally fused to a Teflon®-PTFE film with several homogeneous holes. Closed voids with FEP top and bottom lids and PTFE walls are thus formed. After internally charging the top and bottom FEP layers with positive and negative polarity, respectively, the voids constitute large dipoles that can be deformed by mechanical or electrical stresses. Consequently, the three-layer sandwich exhibits direct and inverse piezoelectricity. The continuous layer-fusing process involves a press with hot cylindrical rolls that operate at temperatures up to 310 °C, which may allow production of inexpensive transducer materials on a large scale. We report about the concept, the processing, the charging and the electromechanical performance of the three-layer ferroelectrets.

AB - In this contribution, we propose a new route towards polymer ferroelectrets with uniform voids: Two homogeneous Teflon®-FEP films are separated by, but also thermally fused to a Teflon®-PTFE film with several homogeneous holes. Closed voids with FEP top and bottom lids and PTFE walls are thus formed. After internally charging the top and bottom FEP layers with positive and negative polarity, respectively, the voids constitute large dipoles that can be deformed by mechanical or electrical stresses. Consequently, the three-layer sandwich exhibits direct and inverse piezoelectricity. The continuous layer-fusing process involves a press with hot cylindrical rolls that operate at temperatures up to 310 °C, which may allow production of inexpensive transducer materials on a large scale. We report about the concept, the processing, the charging and the electromechanical performance of the three-layer ferroelectrets.

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DO - 10.1109/CEIDP.2007.4451625

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EP - 456

JO - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP

JF - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP

SN - 0084-9162

M1 - 4451625

Y2 - 14 October 2007 through 19 October 2007

ER -

Three-layer ferroelectrets from perforated Teflon®-PTFE films fused between two homogeneous Teflon®-FEP films

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