Flexible Lead-Free Piezoelectric Ba<sub>0.94</sub>Sr<sub>0.06</sub>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub>/PDMS Composite for Self-Powered Human Motion Monitoring
Piezoelectric wearable electronics, which can sense external pressure, have attracted widespread attention. However, the enhancement of electromechanical coupling performance remains a great challenge. Here, a new solid solution of Ba<sub>1−<i>x</i></sub>Sr<i><sub>...
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MDPI AG
2023-01-01
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| Series: | Journal of Functional Biomaterials |
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| Online Access: | https://www.mdpi.com/2079-4983/14/1/37 |
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| author | Lin Deng Weili Deng Tao Yang Guo Tian Long Jin Hongrui Zhang Boling Lan Shenglong Wang Yong Ao Bo Wu Weiqing Yang |
| author_facet | Lin Deng Weili Deng Tao Yang Guo Tian Long Jin Hongrui Zhang Boling Lan Shenglong Wang Yong Ao Bo Wu Weiqing Yang |
| author_sort | Lin Deng |
| collection | DOAJ |
| description | Piezoelectric wearable electronics, which can sense external pressure, have attracted widespread attention. However, the enhancement of electromechanical coupling performance remains a great challenge. Here, a new solid solution of Ba<sub>1−<i>x</i></sub>Sr<i><sub>x</sub></i>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub> (<i>x</i> = 0.00~0.08) is prepared to explore potential high-performance, lead-free piezoelectric ceramics. The coexistence of the rhombohedral phase, orthorhombic phase and tetragonal phase is determined in a ceramic with <i>x</i> = 0.06, showing enhanced electrical performance with a piezoelectric coefficient of <i>d</i><sub>33</sub>~650 pC/N. Furthermore, Ba<sub>0.94</sub>Sr<sub>0.06</sub>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub> (BSST) is co-blended with PDMS to prepare flexible piezoelectric nanogenerators (PENGs) and their performance is explored. The effects of inorganic particle concentration and distribution on the piezoelectric output of the composite are systematically analyzed by experimental tests and computational simulations. As a result, the optimal <i>V</i><sub>OC</sub> and <i>I</i><sub>SC</sub> of the PENG (40 wt%) can reach 3.05 V and 44.5 nA, respectively, at 138.89 kPa, and the optimal sensitivity of the device is up to 21.09 mV/kPa. Due to the flexibility of the device, the prepared PENG can be attached to the surface of human skin as a sensor to monitor vital movements of the neck, fingers, elbows, spine, knees and feet of people, thus warning of dangerous behavior or incorrect posture and providing support for sports rehabilitation. |
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| institution | Directory Open Access Journal |
| issn | 2079-4983 |
| language | English |
| last_indexed | 2024-03-09T12:08:20Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
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| series | Journal of Functional Biomaterials |
| spelling | doaj.art-1bcac9d27e4b41be9e3a0a2f025db51b2023-11-30T22:55:09ZengMDPI AGJournal of Functional Biomaterials2079-49832023-01-011413710.3390/jfb14010037Flexible Lead-Free Piezoelectric Ba<sub>0.94</sub>Sr<sub>0.06</sub>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub>/PDMS Composite for Self-Powered Human Motion MonitoringLin Deng0Weili Deng1Tao Yang2Guo Tian3Long Jin4Hongrui Zhang5Boling Lan6Shenglong Wang7Yong Ao8Bo Wu9Weiqing Yang10Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaSichuan Province Key Laboratory of Information Materials, Southwest Minzu University, Chengdu 610041, ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaPiezoelectric wearable electronics, which can sense external pressure, have attracted widespread attention. However, the enhancement of electromechanical coupling performance remains a great challenge. Here, a new solid solution of Ba<sub>1−<i>x</i></sub>Sr<i><sub>x</sub></i>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub> (<i>x</i> = 0.00~0.08) is prepared to explore potential high-performance, lead-free piezoelectric ceramics. The coexistence of the rhombohedral phase, orthorhombic phase and tetragonal phase is determined in a ceramic with <i>x</i> = 0.06, showing enhanced electrical performance with a piezoelectric coefficient of <i>d</i><sub>33</sub>~650 pC/N. Furthermore, Ba<sub>0.94</sub>Sr<sub>0.06</sub>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub> (BSST) is co-blended with PDMS to prepare flexible piezoelectric nanogenerators (PENGs) and their performance is explored. The effects of inorganic particle concentration and distribution on the piezoelectric output of the composite are systematically analyzed by experimental tests and computational simulations. As a result, the optimal <i>V</i><sub>OC</sub> and <i>I</i><sub>SC</sub> of the PENG (40 wt%) can reach 3.05 V and 44.5 nA, respectively, at 138.89 kPa, and the optimal sensitivity of the device is up to 21.09 mV/kPa. Due to the flexibility of the device, the prepared PENG can be attached to the surface of human skin as a sensor to monitor vital movements of the neck, fingers, elbows, spine, knees and feet of people, thus warning of dangerous behavior or incorrect posture and providing support for sports rehabilitation.https://www.mdpi.com/2079-4983/14/1/37flexible piezoelectric sensorBSST particlespiezoelectric compositesBSST/PDMShuman motion monitoring |
| spellingShingle | Lin Deng Weili Deng Tao Yang Guo Tian Long Jin Hongrui Zhang Boling Lan Shenglong Wang Yong Ao Bo Wu Weiqing Yang Flexible Lead-Free Piezoelectric Ba<sub>0.94</sub>Sr<sub>0.06</sub>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub>/PDMS Composite for Self-Powered Human Motion Monitoring Journal of Functional Biomaterials flexible piezoelectric sensor BSST particles piezoelectric composites BSST/PDMS human motion monitoring |
| title | Flexible Lead-Free Piezoelectric Ba<sub>0.94</sub>Sr<sub>0.06</sub>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub>/PDMS Composite for Self-Powered Human Motion Monitoring |
| title_full | Flexible Lead-Free Piezoelectric Ba<sub>0.94</sub>Sr<sub>0.06</sub>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub>/PDMS Composite for Self-Powered Human Motion Monitoring |
| title_fullStr | Flexible Lead-Free Piezoelectric Ba<sub>0.94</sub>Sr<sub>0.06</sub>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub>/PDMS Composite for Self-Powered Human Motion Monitoring |
| title_full_unstemmed | Flexible Lead-Free Piezoelectric Ba<sub>0.94</sub>Sr<sub>0.06</sub>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub>/PDMS Composite for Self-Powered Human Motion Monitoring |
| title_short | Flexible Lead-Free Piezoelectric Ba<sub>0.94</sub>Sr<sub>0.06</sub>Sn<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub>/PDMS Composite for Self-Powered Human Motion Monitoring |
| title_sort | flexible lead free piezoelectric ba sub 0 94 sub sr sub 0 06 sub sn sub 0 09 sub ti sub 0 91 sub o sub 3 sub pdms composite for self powered human motion monitoring |
| topic | flexible piezoelectric sensor BSST particles piezoelectric composites BSST/PDMS human motion monitoring |
| url | https://www.mdpi.com/2079-4983/14/1/37 |
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