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Sensitivity of Pressure Sensors Enhanced by Doping Silver Nanowires
We have developed a highly sensitive flexible pressure sensor based on a piezopolymer and silver nanowires (AgNWs) composite. The composite nanofiber webs are made by electrospinning mixed solutions of poly(inylidene fluoride) (PVDF) and Ag NWs in a cosolvent mixture of dimethyl formamide and aceton...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4118383/ https://www.ncbi.nlm.nih.gov/pubmed/24901980 http://dx.doi.org/10.3390/s140609889 |
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author | Li, Baozhang Xu, Chengyi Zheng, Jianming Xu, Chunye |
author_facet | Li, Baozhang Xu, Chengyi Zheng, Jianming Xu, Chunye |
author_sort | Li, Baozhang |
collection | PubMed |
description | We have developed a highly sensitive flexible pressure sensor based on a piezopolymer and silver nanowires (AgNWs) composite. The composite nanofiber webs are made by electrospinning mixed solutions of poly(inylidene fluoride) (PVDF) and Ag NWs in a cosolvent mixture of dimethyl formamide and acetone. The diameter of the fibers ranges from 200 nm to 500 nm, as demonstrated by SEM images. FTIR and XRD results reveal that doping Ag NWs into PVDF greatly enhances the content of β phase in PVDF. This β phase increase can be attributed to interactions between the Ag NWs and the PVDF matrix, which forces the polymer chains to be embedded into the β phase crystalline. The sensitivity of the pressure sensors agrees well with the FTIR and XRD characteristics. In our experiments, the measured sensitivity reached up to 30 pC/N for the nanofiber webs containing 1.5 wt% Ag NWs, which is close to that of poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE), (77/23)]. This study may provide a new method of fabricating high performance flexible sensors at relatively low cost compared with sensors based on [P(VDF-TrFE), (77/23)]. |
format | Online Article Text |
id | pubmed-4118383 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-41183832014-08-01 Sensitivity of Pressure Sensors Enhanced by Doping Silver Nanowires Li, Baozhang Xu, Chengyi Zheng, Jianming Xu, Chunye Sensors (Basel) Article We have developed a highly sensitive flexible pressure sensor based on a piezopolymer and silver nanowires (AgNWs) composite. The composite nanofiber webs are made by electrospinning mixed solutions of poly(inylidene fluoride) (PVDF) and Ag NWs in a cosolvent mixture of dimethyl formamide and acetone. The diameter of the fibers ranges from 200 nm to 500 nm, as demonstrated by SEM images. FTIR and XRD results reveal that doping Ag NWs into PVDF greatly enhances the content of β phase in PVDF. This β phase increase can be attributed to interactions between the Ag NWs and the PVDF matrix, which forces the polymer chains to be embedded into the β phase crystalline. The sensitivity of the pressure sensors agrees well with the FTIR and XRD characteristics. In our experiments, the measured sensitivity reached up to 30 pC/N for the nanofiber webs containing 1.5 wt% Ag NWs, which is close to that of poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE), (77/23)]. This study may provide a new method of fabricating high performance flexible sensors at relatively low cost compared with sensors based on [P(VDF-TrFE), (77/23)]. MDPI 2014-06-04 /pmc/articles/PMC4118383/ /pubmed/24901980 http://dx.doi.org/10.3390/s140609889 Text en © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Li, Baozhang Xu, Chengyi Zheng, Jianming Xu, Chunye Sensitivity of Pressure Sensors Enhanced by Doping Silver Nanowires |
title | Sensitivity of Pressure Sensors Enhanced by Doping Silver Nanowires |
title_full | Sensitivity of Pressure Sensors Enhanced by Doping Silver Nanowires |
title_fullStr | Sensitivity of Pressure Sensors Enhanced by Doping Silver Nanowires |
title_full_unstemmed | Sensitivity of Pressure Sensors Enhanced by Doping Silver Nanowires |
title_short | Sensitivity of Pressure Sensors Enhanced by Doping Silver Nanowires |
title_sort | sensitivity of pressure sensors enhanced by doping silver nanowires |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4118383/ https://www.ncbi.nlm.nih.gov/pubmed/24901980 http://dx.doi.org/10.3390/s140609889 |
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