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Hydraulically Coupled Dielectric Elastomer Actuators for a Bioinspired Suction Cup
Suction cups of cephalopods show a preeminent performance when absorbing irregular or flat objects. In this paper, an octopi-inspired suction cup, driven by hydraulically coupled dielectric elastomer actuators (HCDEAs), is proposed, which is considered to be controlled easily and have compact struct...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8538296/ https://www.ncbi.nlm.nih.gov/pubmed/34685240 http://dx.doi.org/10.3390/polym13203481 |
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author | Zhang, Chi Liu, Lei Xu, Kanghui Dong, Zhonghong Ding, Yuxi Li, Qi Li, Pengfei |
author_facet | Zhang, Chi Liu, Lei Xu, Kanghui Dong, Zhonghong Ding, Yuxi Li, Qi Li, Pengfei |
author_sort | Zhang, Chi |
collection | PubMed |
description | Suction cups of cephalopods show a preeminent performance when absorbing irregular or flat objects. In this paper, an octopi-inspired suction cup, driven by hydraulically coupled dielectric elastomer actuators (HCDEAs), is proposed, which is considered to be controlled easily and have compact structure. To investigate the performance of suction cups, experiments have been conducted to clarify the effect of the pre-stretch ratio and chamber angle on suction forces. It could be seen that both factors have a complicated influence on suction forces, and the best performance obtained was a reasonable combination of the pre-stretch ratio and chamber angle. Here, we achieved a maximum suction force of 175 mN with λ(p) = 1.2, α = 23° under a DC voltage of 3500 V. To enhance the capacity and adaptation of the suction cup, flat objects of various types of materials were introduced as targets. Experimental results displayed that for tested materials, including a dry/wet acrylic plate, CD, ceramic wafer, and aluminum plate, the suction cup showed outstanding performance of absorbing and lifting the target without any damage or scratch to them. Our research may serve as a guide to the optimal design and provide insights into the performance of the HCDEAs-actuated suction cup. |
format | Online Article Text |
id | pubmed-8538296 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-85382962021-10-24 Hydraulically Coupled Dielectric Elastomer Actuators for a Bioinspired Suction Cup Zhang, Chi Liu, Lei Xu, Kanghui Dong, Zhonghong Ding, Yuxi Li, Qi Li, Pengfei Polymers (Basel) Article Suction cups of cephalopods show a preeminent performance when absorbing irregular or flat objects. In this paper, an octopi-inspired suction cup, driven by hydraulically coupled dielectric elastomer actuators (HCDEAs), is proposed, which is considered to be controlled easily and have compact structure. To investigate the performance of suction cups, experiments have been conducted to clarify the effect of the pre-stretch ratio and chamber angle on suction forces. It could be seen that both factors have a complicated influence on suction forces, and the best performance obtained was a reasonable combination of the pre-stretch ratio and chamber angle. Here, we achieved a maximum suction force of 175 mN with λ(p) = 1.2, α = 23° under a DC voltage of 3500 V. To enhance the capacity and adaptation of the suction cup, flat objects of various types of materials were introduced as targets. Experimental results displayed that for tested materials, including a dry/wet acrylic plate, CD, ceramic wafer, and aluminum plate, the suction cup showed outstanding performance of absorbing and lifting the target without any damage or scratch to them. Our research may serve as a guide to the optimal design and provide insights into the performance of the HCDEAs-actuated suction cup. MDPI 2021-10-11 /pmc/articles/PMC8538296/ /pubmed/34685240 http://dx.doi.org/10.3390/polym13203481 Text en © 2021 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 Zhang, Chi Liu, Lei Xu, Kanghui Dong, Zhonghong Ding, Yuxi Li, Qi Li, Pengfei Hydraulically Coupled Dielectric Elastomer Actuators for a Bioinspired Suction Cup |
title | Hydraulically Coupled Dielectric Elastomer Actuators for a Bioinspired Suction Cup |
title_full | Hydraulically Coupled Dielectric Elastomer Actuators for a Bioinspired Suction Cup |
title_fullStr | Hydraulically Coupled Dielectric Elastomer Actuators for a Bioinspired Suction Cup |
title_full_unstemmed | Hydraulically Coupled Dielectric Elastomer Actuators for a Bioinspired Suction Cup |
title_short | Hydraulically Coupled Dielectric Elastomer Actuators for a Bioinspired Suction Cup |
title_sort | hydraulically coupled dielectric elastomer actuators for a bioinspired suction cup |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8538296/ https://www.ncbi.nlm.nih.gov/pubmed/34685240 http://dx.doi.org/10.3390/polym13203481 |
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