Non-equilibrium compression achieving high sensitivity and linearity for iontronic pressure sensors

Yang, Jing1; Li, Zhibin1; Wu, Ying2; Shen, Yong1; Zhang, Ming3; Chen, Bin4; Yuan, Guojiang1; Xiao, Songhua1; Feng, Jiansong1; Zhang, Xu1; Tang, Yuwei1; Ding, Sunan5; Chen, Xiaolong1; Wang, Taihong1,2

2024-07-30

10.1016/j.scib.2024.05.001

SCIENCE BULLETIN   影响因子和分区

2095-9273

2095-9281

Flexible pressure sensors with high sensitivity and linearity are highly desirable for robot sensing and human physiological signal detection. However, the current strategies for stabilizing axial microstructures (e.g., micro-pyramids) are mainly susceptible to structural stiffening during compression, thereby limiting the realization of high sensitivity and linearity. Here, we report a bending-induced nonequilibrium compression process that effectively enhances the compressibility of microstructures, thereby crucially improving the efficiency of interfacial area growth of electric double layer (EDL). Based on this principle, we fabricate an iontronic flexible pressure sensor with vertical graphene (VG) array electrodes. Ultra-high sensitivity (185.09 kPa-1) and linearity (R2 = 0.9999) are realized over a wide pressure range (0.49 Pa-66.67 kPa). It also exhibits remarkable mechanical stability during compression and bending. The sensor is successfully employed in a robotic gripping task to recognize the targets of different materials and shapes based on a multilayer perception (MLP) neural network. It opens the door to realizing haptic sensing capabilities for robotic hands and prosthetic limbs. (c) 2024 Science China Press. Published by Elsevier B.V. and Science China Press. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

Artificial mechanoreceptor Pressure sensor Vertical grapheme Ionic nanofiber Object recognition E -skin

SCI ; EI

英语

第一 ; 通讯

Guangdong Major Talent Project["2019CX01X014","2019QN01C177"]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:001274351300001

ELSEVIER

20242116138818

Artificial limbs ; Mechanical stability ; Microstructure ; Multilayer neural networks ; Object recognition ; Robotic arms ; Tactile sensors

Prosthetics:462.4 ; Robotics:731.5 ; Robot Applications:731.6 ; Pressure Measuring Instruments:944.3 ; Materials Science:951

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China
3.Hunan Univ, Changsha Semicond Technol & Applicat Innovat Res I, Coll Integrated Circuits,Engn Res Ctr Adv Semicond, Coll Semicond,Key Lab Micronano Optoelect Devices,, Changsha 410082, Peoples R China
4.Yanshan Univ, Sch Environm & Chem Engn, Qinhuangdao 066004, Peoples R China
5.Nanjing Univ, Sch Integrated Circuits, Suzhou 215163, Peoples R China

Yang, Jing,Li, Zhibin,Wu, Ying,et al. Non-equilibrium compression achieving high sensitivity and linearity for iontronic pressure sensors[J]. SCIENCE BULLETIN,2024,69(14):2221-2230.

Yang, Jing.,Li, Zhibin.,Wu, Ying.,Shen, Yong.,Zhang, Ming.,...&Wang, Taihong.(2024).Non-equilibrium compression achieving high sensitivity and linearity for iontronic pressure sensors.SCIENCE BULLETIN,69(14),2221-2230.

Yang, Jing,et al."Non-equilibrium compression achieving high sensitivity and linearity for iontronic pressure sensors".SCIENCE BULLETIN 69.14(2024):2221-2230.