Laser direct writing and characterizations of flexible piezoresistive sensors with microstructures

Functional materials with high viscosity and solid materials have received more and more attentions in flexible pressure sensors, which are inadequate in the most used molding method. Herein, laser direct writing (LDW) method is proposed to fabricate flexible piezoresistive sensors with microstructu...

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Autores principales:	Chenying Zhang, Wei Zhou, Da Geng, Cheng Bai, Weida Li, Songyue Chen, Tao Luo, Lifeng Qin, Yu Xie
Formato:	article
Lenguaje:	EN
Publicado:	Institue of Optics and Electronics, Chinese Academy of Sciences 2021
Materias:	flexible pressure sensor piezoresistive sensor microstructure laser processing Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/d831be003daf4ffc8863de974ea0ba54
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spelling	oai:doaj.org-article:d831be003daf4ffc8863de974ea0ba542021-11-17T07:56:50ZLaser direct writing and characterizations of flexible piezoresistive sensors with microstructures2096-457910.29026/oea.2021.200061https://doaj.org/article/d831be003daf4ffc8863de974ea0ba542021-04-01T00:00:00Zhttp://www.oejournal.org/article/doi/10.29026/oea.2021.200061https://doaj.org/toc/2096-4579Functional materials with high viscosity and solid materials have received more and more attentions in flexible pressure sensors, which are inadequate in the most used molding method. Herein, laser direct writing (LDW) method is proposed to fabricate flexible piezoresistive sensors with microstructures on PDMS/ MWCNTs composites with an 8% MWCNTs mass fraction. By controlling laser energy, microstructures with different geometries can be obtained, which significantly impacts the performances of the sensors. Subsequently, curved microcones with excellent performance are fabricated under parameters of f = 40 kHz and v = 150 mm·s-1. The sensor exhibits continuous multi-linear sensitivity, ultrahigh original sensitivity of 21.80 % kPa-1, wide detection range of over 20 kPa, response/recovery time of ~100 ms and good cycle stability for more than 1000 times. Besides, obvious resistance variation can be observed when tiny pressure (a peanut of 30 Pa) is applied. Finally, the flexible piezoresistive sensor can be applied for LED brightness controlling, pulse detection and voice recognition.Chenying ZhangWei ZhouDa GengCheng BaiWeida LiSongyue ChenTao LuoLifeng QinYu XieInstitue of Optics and Electronics, Chinese Academy of Sciencesarticleflexible pressure sensorpiezoresistive sensormicrostructurelaser processingOptics. LightQC350-467ENOpto-Electronic Advances, Vol 4, Iss 4, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	flexible pressure sensor piezoresistive sensor microstructure laser processing Optics. Light QC350-467
spellingShingle	flexible pressure sensor piezoresistive sensor microstructure laser processing Optics. Light QC350-467 Chenying Zhang Wei Zhou Da Geng Cheng Bai Weida Li Songyue Chen Tao Luo Lifeng Qin Yu Xie Laser direct writing and characterizations of flexible piezoresistive sensors with microstructures
description	Functional materials with high viscosity and solid materials have received more and more attentions in flexible pressure sensors, which are inadequate in the most used molding method. Herein, laser direct writing (LDW) method is proposed to fabricate flexible piezoresistive sensors with microstructures on PDMS/ MWCNTs composites with an 8% MWCNTs mass fraction. By controlling laser energy, microstructures with different geometries can be obtained, which significantly impacts the performances of the sensors. Subsequently, curved microcones with excellent performance are fabricated under parameters of f = 40 kHz and v = 150 mm·s-1. The sensor exhibits continuous multi-linear sensitivity, ultrahigh original sensitivity of 21.80 % kPa-1, wide detection range of over 20 kPa, response/recovery time of ~100 ms and good cycle stability for more than 1000 times. Besides, obvious resistance variation can be observed when tiny pressure (a peanut of 30 Pa) is applied. Finally, the flexible piezoresistive sensor can be applied for LED brightness controlling, pulse detection and voice recognition.
format	article
author	Chenying Zhang Wei Zhou Da Geng Cheng Bai Weida Li Songyue Chen Tao Luo Lifeng Qin Yu Xie
author_facet	Chenying Zhang Wei Zhou Da Geng Cheng Bai Weida Li Songyue Chen Tao Luo Lifeng Qin Yu Xie
author_sort	Chenying Zhang
title	Laser direct writing and characterizations of flexible piezoresistive sensors with microstructures
title_short	Laser direct writing and characterizations of flexible piezoresistive sensors with microstructures
title_full	Laser direct writing and characterizations of flexible piezoresistive sensors with microstructures
title_fullStr	Laser direct writing and characterizations of flexible piezoresistive sensors with microstructures
title_full_unstemmed	Laser direct writing and characterizations of flexible piezoresistive sensors with microstructures
title_sort	laser direct writing and characterizations of flexible piezoresistive sensors with microstructures
publisher	Institue of Optics and Electronics, Chinese Academy of Sciences
publishDate	2021
url	https://doaj.org/article/d831be003daf4ffc8863de974ea0ba54
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_version_	1718425831925088256

Laser direct writing and characterizations of flexible piezoresistive sensors with microstructures

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