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Article

A High Sensitive Flexible Pressure Sensor Designed by Silver Nanowires Embedded in Polyimide (AgNW-PI)

National Key Laboratory of Science and Technology on Micro/Nano Fabrication, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Micromachines 2019, 10(3), 206; https://doi.org/10.3390/mi10030206
Received: 20 February 2019 / Revised: 17 March 2019 / Accepted: 19 March 2019 / Published: 24 March 2019
Silver nanowires (AgNW) have excellent electrical conductivity, transparency, and flexing endurance, and are broadly used in flexible electrodes and flexible sensors. This study mixed the silver nanowires and polyimide (PI) polymer using an in situ synthesis method, effectively reducing the problem of silver nanowires falling off the substrate. The selective wet etching method was firstly used to process the surface of AgNW-PI films, greatly enhancing the surface conductivity of AgNW-PI films. A flexible pressure sensor with high sensitivity was designed with two face-to-face AgNW-PI ultrathin layers. The experimental results show that our sensor presented a high sensitivity of about 1.3294 kPa−1 under a pressure of about 600 Pa, and when pressure continued to increase, the sensitivity decreased rapidly and reached saturation. Our flexible pressure sensor has the properties of low cost, high sensitivity, excellent repeatability, durability, and can detect various types of mechanical forces which could be utilized for flexible electronics. View Full-Text
Keywords: flexible pressure sensor; high sensitivity; silver nanowires polyimide (AgNW-PI); selective wet etching flexible pressure sensor; high sensitivity; silver nanowires polyimide (AgNW-PI); selective wet etching
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MDPI and ACS Style

Li, H.; Ding, G.; Yang, Z. A High Sensitive Flexible Pressure Sensor Designed by Silver Nanowires Embedded in Polyimide (AgNW-PI). Micromachines 2019, 10, 206. https://doi.org/10.3390/mi10030206

AMA Style

Li H, Ding G, Yang Z. A High Sensitive Flexible Pressure Sensor Designed by Silver Nanowires Embedded in Polyimide (AgNW-PI). Micromachines. 2019; 10(3):206. https://doi.org/10.3390/mi10030206

Chicago/Turabian Style

Li, Hongfang, Guifu Ding, and Zhuoqing Yang. 2019. "A High Sensitive Flexible Pressure Sensor Designed by Silver Nanowires Embedded in Polyimide (AgNW-PI)" Micromachines 10, no. 3: 206. https://doi.org/10.3390/mi10030206

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