Wearable Flexible Strain Sensor Based on Three-Dimensional Wavy Laser-Induced Graphene and Silicone Rubber

Huang, Lixiong1; Wang, Han1; Wu, Peixuan1; Huang, Weimin2; Gao, Wei3; Fang, Feiyu1; Cai, Nian4; Chen, Rouxi5; Zhu, Ziming6

2020-08

10.3390/s20154266

SENSORS   影响因子和分区

1424-8220

1424-8220

Laser-induced graphene (LIG) has the advantages of one-step fabrication, prominent mechanical performance, as well as high conductivity; it acts as the ideal material to fabricate flexible strain sensors. In this study, a wearable flexible strain sensor consisting of three-dimensional (3D) wavy LIG and silicone rubber was reported. With a laser to scan on a polyimide film, 3D wavy LIG could be synthesized on the wavy surface of a mold. The wavy-LIG strain sensor was developed by transferring LIG to silicone rubber substrate and then packaging. For stress concentration, the ultimate strain primarily took place in the troughs of wavy LIG, resulting in higher sensitivity and less damage to LIG during stretching. As a result, the wavy-LIG strain sensor achieved high sensitivity (gauge factor was 37.8 in a range from 0% to 31.8%, better than the planar-LIG sensor), low hysteresis (1.39%) and wide working range (from 0% to 47.7%). The wavy-LIG strain sensor had a stable and rapid dynamic response; its reversibility and repeatability were demonstrated. After 5000 cycles, the signal peak varied by only 2.32%, demonstrating the long-term durability. Besides, its applications in detecting facial skin expansion, muscle movement, and joint movement, were discussed. It is considered a simple, efficient, and low-cost method to fabricate a flexible strain sensor with high sensitivity and structural robustness. Furthermore, the wavy-LIG strain senor can be developed into wearable sensing devices for virtual/augmented reality or electronic skin.

flexible strain sensor laser-induced graphene silicone rubber 3D wavy structure

SCI ; EI

英语

其他

Project of Science and Technology of Foshan City[2015IT100152] ; University Innovation and Entrepreneurship Education Major Project of Guangzhou City[201709P05] ; Jihua Laboratory Foundation of Guangdong Province Laboratory of China[X190071UZ190] ; Science and Technology Program of Guangzhou, China[201803010065]

Chemistry ; Engineering ; Instruments & Instrumentation

Chemistry, Analytical ; Engineering, Electrical & Electronic ; Instruments & Instrumentation

WOS:000559518400001

MDPI

20203209013873

Wearable sensors ; Silicones ; Rubber

Nanotechnology:761 ; Chemical Products Generally:804 ; Organic Polymers:815.1.1 ; Natural Rubber:818.1

CHEMISTRY

Web of Science

1.Guangdong Univ Technol, Sch Mech & Elect Engn,Ultraprecis Mfg Equipment G, State Key Lab Precis Elect Mfg Technol & Equipmen, Guangdong Prov Key Lab Micronano Mfg Technol & Eq, Guangzhou 510006, Peoples R China
2.Nanyang Technol Univ, Sch Mech & Aerosp Engn, 50 Nanyang Ave, Singapore 639798, Singapore
3.Univ Auckland, Dept Chem & Mat Engn, Private Bag 92019, Auckland 1142, New Zealand
4.Guangdong Univ Technol, Sch Informat Sci, Guangzhou 510006, Peoples R China
5.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
6.Foshan Lepton Precis M&C Tech Co Ltd, Foshan 528225, Peoples R China

Huang, Lixiong,Wang, Han,Wu, Peixuan,et al. Wearable Flexible Strain Sensor Based on Three-Dimensional Wavy Laser-Induced Graphene and Silicone Rubber[J]. SENSORS,2020,20(15):1-14.

Huang, Lixiong.,Wang, Han.,Wu, Peixuan.,Huang, Weimin.,Gao, Wei.,...&Zhu, Ziming.(2020).Wearable Flexible Strain Sensor Based on Three-Dimensional Wavy Laser-Induced Graphene and Silicone Rubber.SENSORS,20(15),1-14.

Huang, Lixiong,et al."Wearable Flexible Strain Sensor Based on Three-Dimensional Wavy Laser-Induced Graphene and Silicone Rubber".SENSORS 20.15(2020):1-14.