Fabrication and Performance of Graphene Flexible Pressure Sensor with Micro/Nano Structure
| Autor: | Jie Li, Weibin Wu, Junwei Hou, Liang Rongxuan, Chongyang Han, Zhiheng Zeng, Bin Li, Jian Xu, Ting Tang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Nanostructure Fabrication Composite number Substrate (electronics) TP1-1185 Biochemistry Article Analytical Chemistry law.invention Wearable Electronic Devices Transfer printing law Electrical and Electronic Engineering Composite material Instrumentation Conductive polymer Graphene Lasers Chemical technology Electric Conductivity sensitivity Pressure sensor laser-induced graphene Atomic and Molecular Physics and Optics Nanostructures flexible pressure sensor Graphite micro-nano structure |
| Zdroj: | Sensors (Basel, Switzerland) Sensors Volume 21 Issue 21 Sensors, Vol 21, Iss 7022, p 7022 (2021) |
| ISSN: | 1424-8220 |
| Popis: | Laser-induced graphene (LIG) has been widely used in flexible sensors due to its excellent mechanical properties and high conductivity. In this paper, a flexible pressure sensor prepared by bionic micro/nanostructure design and LIG mass fraction regulation is reported. First, prepared LIG and conductive carbon paste (CCP) solutions were mixed to obtain a conductive polymer. After the taro leaf structure was etched on the surface of the aluminum alloy plate by Nd:YAG laser processing, the conductive polymer was evenly coated on the template. Pressure sensors were packaged with a stencil transfer printing combined with an Ecoflex flexible substrate. Finally, the effects of different laser flux and the proportion of LIG in the composite on the sensitivity of the sensor are discussed. The results show that when the laser flux is 71.66 J·cm−2 and the mass fraction of LIG is 5%, the sensor has the best response characteristics, with a response time and a recovery time of 86 ms and 101 ms, respectively, with a sensitivity of 1.2 kPa−1 over a pressure range of 0–6 kPa, and stability of 650 cycle tests. The LIG/CCP sensor with a bionic structure demonstrates its potential in wearable devices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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