Stretch-tolerant interconnects derived from silanization-assisted capping layer lamination for smart skin-attachable electronics

Zheng, Zetao1; Huang, Zhuobin2; Zhang, Nian3; Liu, Shiyu1; Zhao, Lingyu4; Li, Xingyi1; Wang, Liu3; Xu, Fang1; Shi, Jidong1

2024-08-01

10.1016/j.mtphys.2024.101494

MATERIALS TODAY PHYSICS   影响因子和分区

2542-5293

Flexible strain sensor arrays hold great promise in on-skin monitoring of human signals and activities. Despite the development of strain-sensitive materials and patterning technologies for improved performance and device integration, the metal film serving as interconnects is always vulnerable upon stretch, which hinders the operation under large strains. Herein, a novel strategy is developed for achieving stretch-tolerant interconnects within a sensor array. Through introducing a high-modulus capping layer for the deposition of Ag interconnects, followed by silanization-assisted lamination onto the stretchable substrate where strain-sensitive graphene patches are inkjet-printed, the deformation of Ag interconnects is largely suppressed upon the global strain of the device, and a high working range of 40 % strain is achieved. Moreover, the chemical bonding between the capping layer and the stretchable substrate ensures a stable contact between the electrode and the sensitive layer under vigorous bending. The as-prepared sensor array demonstrates high sensitivity (gauge factor (GF) > 100) within a wide range (18 %), and could reliably monitor various physiological signals and human activities. A machine learning-assisted wearable gesture recognition system is developed based on the sensor array and a convolutional neural network (CNN), which could distinguish from 10 defined gestures with 100 % accuracy after 14 training processes. The facile and effective strategy could be universally applied for metal interconnects protection under stretch, and dramatically facilitate the design of smart flexible electronics.

Stretchable interconnects Strain suppression Sensor array Skin-attachable electronics Multiplexed sensing Gesture recognition

SCI ; EI

英语

通讯

Program of the National Natural Science Foundation of China["22109104","52103301","62001308"] ; Natural Science Foundation of Guangdong Province[2023A1515012835] ; Youth Innovation Talent Project of Guangdong Education Department[2021KQNCX081] ; Natural Science Foundation of Top Talent of SZTU[GDRC202101] ; Shenzhen Science and Technology Program["JCYJ20230807093559046","RCBS20210609103736094"]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied

WOS:001265757300001

ELSEVIER

20242716598389

Chemical bonds ; Flexible electronics ; Gesture recognition ; Laminating ; Substrates ; Wearable sensors

Electronic Equipment, General Purpose and Industrial:715 ; Physical Chemistry:801.4 ; Processing of Plastics and Other Polymers:816.1 ; Materials Science:951

Web of Science

1.Shenzhen Technol Univ, Coll Engn Phys, Ctr Intense Laser Applicat Technol, Shenzhen Key Lab Ultraintense Laser & Adv Mat Tech, Shenzhen 518118, Peoples R China
2.Univ Elect Sci & Technol China, Sch Informat & Commun Engn, Chengdu 611731, Peoples R China
3.Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230026, Peoples R China
4.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Zheng, Zetao,Huang, Zhuobin,Zhang, Nian,et al. Stretch-tolerant interconnects derived from silanization-assisted capping layer lamination for smart skin-attachable electronics[J]. MATERIALS TODAY PHYSICS,2024,46.

Zheng, Zetao.,Huang, Zhuobin.,Zhang, Nian.,Liu, Shiyu.,Zhao, Lingyu.,...&Shi, Jidong.(2024).Stretch-tolerant interconnects derived from silanization-assisted capping layer lamination for smart skin-attachable electronics.MATERIALS TODAY PHYSICS,46.

Zheng, Zetao,et al."Stretch-tolerant interconnects derived from silanization-assisted capping layer lamination for smart skin-attachable electronics".MATERIALS TODAY PHYSICS 46(2024).