Flexible Pressure Sensor with Micro-Structure Arrays Based on PDMS and PEDOT:PSS/PUD&CNTs Composite Film with 3D Printing

Flexible pressure sensors are widely used in different fields, especially in human motion, robot monitoring and medical treatment. Herein, a flexible pressure sensor consists of the flat top plate, and the microstructured bottom plate is developed. Both plates are made of polydimethylsiloxane (PDMS)...

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Autores principales: Yiwei Shao, Qi Zhang, Yulong Zhao, Xing Pang, Mingjie Liu, Dongliang Zhang, Xiaoya Liang
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Lenguaje:EN
Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:2ba98a35d68b4d10845e622efdf75c0d2021-11-11T18:04:29ZFlexible Pressure Sensor with Micro-Structure Arrays Based on PDMS and PEDOT:PSS/PUD&CNTs Composite Film with 3D Printing10.3390/ma142164991996-1944https://doaj.org/article/2ba98a35d68b4d10845e622efdf75c0d2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6499https://doaj.org/toc/1996-1944Flexible pressure sensors are widely used in different fields, especially in human motion, robot monitoring and medical treatment. Herein, a flexible pressure sensor consists of the flat top plate, and the microstructured bottom plate is developed. Both plates are made of polydimethylsiloxane (PDMS) by molding from the 3D printed template. The contact surfaces of the top and bottom plates are coated with a mixture of poly (3,4-ethylenedioxythiophene) poly (styrene sulfonate) (PEDOT:PSS) and polyurethane dispersion (PUD) as stretchable film electrodes with carbon nanotubes on the electrode surface. By employing 3D printing technology, using digital light processing (DLP), the fabrication of the sensor is low-cost and fast. The sensor models with different microstructures are first analyzed by the Finite Element Method (FEM), and then the models are fabricated and tested. The sensor with 5 × 5 hemispheres has a sensitivity of 3.54 × 10<sup>−3</sup> S/kPa in the range of 0–22.2 kPa. The zero-temperature coefficient is −0.0064%FS/°C. The durability test is carried out for 2000 cycles, and it remains stable during the whole test. This work represents progress in flexible pressure sensing and demonstrates the advantages of 3D printing technology in sensor processing.Yiwei ShaoQi ZhangYulong ZhaoXing PangMingjie LiuDongliang ZhangXiaoya LiangMDPI AGarticleflexible pressure sensormicrostructure3D printingcomposite filmTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6499, p 6499 (2021)
institution DOAJ
collection DOAJ
language EN
topic flexible pressure sensor
microstructure
3D printing
composite film
Technology
T
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Engineering (General). Civil engineering (General)
TA1-2040
Microscopy
QH201-278.5
Descriptive and experimental mechanics
QC120-168.85
spellingShingle flexible pressure sensor
microstructure
3D printing
composite film
Technology
T
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Engineering (General). Civil engineering (General)
TA1-2040
Microscopy
QH201-278.5
Descriptive and experimental mechanics
QC120-168.85
Yiwei Shao
Qi Zhang
Yulong Zhao
Xing Pang
Mingjie Liu
Dongliang Zhang
Xiaoya Liang
Flexible Pressure Sensor with Micro-Structure Arrays Based on PDMS and PEDOT:PSS/PUD&CNTs Composite Film with 3D Printing
description Flexible pressure sensors are widely used in different fields, especially in human motion, robot monitoring and medical treatment. Herein, a flexible pressure sensor consists of the flat top plate, and the microstructured bottom plate is developed. Both plates are made of polydimethylsiloxane (PDMS) by molding from the 3D printed template. The contact surfaces of the top and bottom plates are coated with a mixture of poly (3,4-ethylenedioxythiophene) poly (styrene sulfonate) (PEDOT:PSS) and polyurethane dispersion (PUD) as stretchable film electrodes with carbon nanotubes on the electrode surface. By employing 3D printing technology, using digital light processing (DLP), the fabrication of the sensor is low-cost and fast. The sensor models with different microstructures are first analyzed by the Finite Element Method (FEM), and then the models are fabricated and tested. The sensor with 5 × 5 hemispheres has a sensitivity of 3.54 × 10<sup>−3</sup> S/kPa in the range of 0–22.2 kPa. The zero-temperature coefficient is −0.0064%FS/°C. The durability test is carried out for 2000 cycles, and it remains stable during the whole test. This work represents progress in flexible pressure sensing and demonstrates the advantages of 3D printing technology in sensor processing.
format article
author Yiwei Shao
Qi Zhang
Yulong Zhao
Xing Pang
Mingjie Liu
Dongliang Zhang
Xiaoya Liang
author_facet Yiwei Shao
Qi Zhang
Yulong Zhao
Xing Pang
Mingjie Liu
Dongliang Zhang
Xiaoya Liang
author_sort Yiwei Shao
title Flexible Pressure Sensor with Micro-Structure Arrays Based on PDMS and PEDOT:PSS/PUD&CNTs Composite Film with 3D Printing
title_short Flexible Pressure Sensor with Micro-Structure Arrays Based on PDMS and PEDOT:PSS/PUD&CNTs Composite Film with 3D Printing
title_full Flexible Pressure Sensor with Micro-Structure Arrays Based on PDMS and PEDOT:PSS/PUD&CNTs Composite Film with 3D Printing
title_fullStr Flexible Pressure Sensor with Micro-Structure Arrays Based on PDMS and PEDOT:PSS/PUD&CNTs Composite Film with 3D Printing
title_full_unstemmed Flexible Pressure Sensor with Micro-Structure Arrays Based on PDMS and PEDOT:PSS/PUD&CNTs Composite Film with 3D Printing
title_sort flexible pressure sensor with micro-structure arrays based on pdms and pedot:pss/pud&cnts composite film with 3d printing
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/2ba98a35d68b4d10845e622efdf75c0d
work_keys_str_mv AT yiweishao flexiblepressuresensorwithmicrostructurearraysbasedonpdmsandpedotpsspudcntscompositefilmwith3dprinting
AT qizhang flexiblepressuresensorwithmicrostructurearraysbasedonpdmsandpedotpsspudcntscompositefilmwith3dprinting
AT yulongzhao flexiblepressuresensorwithmicrostructurearraysbasedonpdmsandpedotpsspudcntscompositefilmwith3dprinting
AT xingpang flexiblepressuresensorwithmicrostructurearraysbasedonpdmsandpedotpsspudcntscompositefilmwith3dprinting
AT mingjieliu flexiblepressuresensorwithmicrostructurearraysbasedonpdmsandpedotpsspudcntscompositefilmwith3dprinting
AT dongliangzhang flexiblepressuresensorwithmicrostructurearraysbasedonpdmsandpedotpsspudcntscompositefilmwith3dprinting
AT xiaoyaliang flexiblepressuresensorwithmicrostructurearraysbasedonpdmsandpedotpsspudcntscompositefilmwith3dprinting
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