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Effects of Electrode Materials and Compositions on the Resistance Behavior of Dielectric Elastomer Transducers
Dielectric elastomer (DE) transducers possess various advantages in comparison to alternative actuator technologies, such as, e.g., electromagnetic drive systems. DE can achieve large deformations, high driving frequencies, and are energy efficient. DEs consist of a dielectric membrane sandwiched be...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9861283/ https://www.ncbi.nlm.nih.gov/pubmed/36679190 http://dx.doi.org/10.3390/polym15020310 |
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author | Willian, Tobias Pascal Fasolt, Bettina Motzki, Paul Rizzello, Gianluca Seelecke, Stefan |
author_facet | Willian, Tobias Pascal Fasolt, Bettina Motzki, Paul Rizzello, Gianluca Seelecke, Stefan |
author_sort | Willian, Tobias Pascal |
collection | PubMed |
description | Dielectric elastomer (DE) transducers possess various advantages in comparison to alternative actuator technologies, such as, e.g., electromagnetic drive systems. DE can achieve large deformations, high driving frequencies, and are energy efficient. DEs consist of a dielectric membrane sandwiched between conductive electrodes. Electrodes are especially important for performance, as they must maintain high electrical conductivity while being subjected to large stretches. Low electrical resistances allow faster actuation frequencies. Additionally, a rate-independent, monotonic, and hysteresis-free resistance behavior over large elongations enables DEs to be used as resistive deformation sensors, in contrast to the conventional capacitive ones. This paper presents a systematic study on various electrode compositions consisting of different polydimethylsiloxane (PDMS) and nano-scaled carbon blacks (CB). The experiments show that the electrode resistance depends on the weight ratio of CB to PDMS, and the type of CB used. At low ratios, a high electrical resistance accompanied by a bimodal behavior in the resistance time evolution was observed, when stretching the electrodes cyclic in a triangular manner. This phenomenon decreases with increasing CB ratio. The type of PDMS also influences the resistance characteristics during elongation. Finally, a physical model of the observed phenomenon is presented. |
format | Online Article Text |
id | pubmed-9861283 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-98612832023-01-22 Effects of Electrode Materials and Compositions on the Resistance Behavior of Dielectric Elastomer Transducers Willian, Tobias Pascal Fasolt, Bettina Motzki, Paul Rizzello, Gianluca Seelecke, Stefan Polymers (Basel) Article Dielectric elastomer (DE) transducers possess various advantages in comparison to alternative actuator technologies, such as, e.g., electromagnetic drive systems. DE can achieve large deformations, high driving frequencies, and are energy efficient. DEs consist of a dielectric membrane sandwiched between conductive electrodes. Electrodes are especially important for performance, as they must maintain high electrical conductivity while being subjected to large stretches. Low electrical resistances allow faster actuation frequencies. Additionally, a rate-independent, monotonic, and hysteresis-free resistance behavior over large elongations enables DEs to be used as resistive deformation sensors, in contrast to the conventional capacitive ones. This paper presents a systematic study on various electrode compositions consisting of different polydimethylsiloxane (PDMS) and nano-scaled carbon blacks (CB). The experiments show that the electrode resistance depends on the weight ratio of CB to PDMS, and the type of CB used. At low ratios, a high electrical resistance accompanied by a bimodal behavior in the resistance time evolution was observed, when stretching the electrodes cyclic in a triangular manner. This phenomenon decreases with increasing CB ratio. The type of PDMS also influences the resistance characteristics during elongation. Finally, a physical model of the observed phenomenon is presented. MDPI 2023-01-07 /pmc/articles/PMC9861283/ /pubmed/36679190 http://dx.doi.org/10.3390/polym15020310 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Willian, Tobias Pascal Fasolt, Bettina Motzki, Paul Rizzello, Gianluca Seelecke, Stefan Effects of Electrode Materials and Compositions on the Resistance Behavior of Dielectric Elastomer Transducers |
title | Effects of Electrode Materials and Compositions on the Resistance Behavior of Dielectric Elastomer Transducers |
title_full | Effects of Electrode Materials and Compositions on the Resistance Behavior of Dielectric Elastomer Transducers |
title_fullStr | Effects of Electrode Materials and Compositions on the Resistance Behavior of Dielectric Elastomer Transducers |
title_full_unstemmed | Effects of Electrode Materials and Compositions on the Resistance Behavior of Dielectric Elastomer Transducers |
title_short | Effects of Electrode Materials and Compositions on the Resistance Behavior of Dielectric Elastomer Transducers |
title_sort | effects of electrode materials and compositions on the resistance behavior of dielectric elastomer transducers |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9861283/ https://www.ncbi.nlm.nih.gov/pubmed/36679190 http://dx.doi.org/10.3390/polym15020310 |
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