A Skin‐Like Pressure‐ and Vibration‐Sensitive Tactile Sensor Based on Polyacrylamide/Silk Fibroin Elastomer

With bio‐integrated electronics booming, stretchable, elastic, compliance, and biocompatible elastomers attract immense research interest due to their potential to integrate with electronic devices and soft tissues. In this work, a double network skin‐like elastomer based on hydrophobic‐polyacrylami...

Full description

Saved in:
Bibliographic Details
Published in:Advanced functional materials 2022-05, Vol.32 (19), p.n/a
Main Authors: Li, Shengyou, Liu, Guoqing, Wen, Hao, Liu, Guoyi, Wang, Hao, Ye, Meidan, Yang, Yun, Guo, Wenxi, Liu, Yufei
Format: Article
Language:English
Subjects:
Biocompatibility
double network hydrogels
Elastomers
Electronic devices
Electronics
Human motion
Hydrogels
Materials science
mechanoreceptors
Modulus of elasticity
Motion perception
Polyacrylamide
pressure sensors
Resilience
Silk fibroin
Soft tissues
Stretchability
Tactile sensors (robotics)
Tensile strain
Tensile stress
Vibration
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:With bio‐integrated electronics booming, stretchable, elastic, compliance, and biocompatible elastomers attract immense research interest due to their potential to integrate with electronic devices and soft tissues. In this work, a double network skin‐like elastomer based on hydrophobic‐polyacrylamide/silk fibroin (HSF) is synthesized. The addition of the fibroin in polyacrylamide hydrogel significantly improves its stretchability, resilience, and tear resistance. Specifically, the HSF elastomer demonstrates a tensile strain as high as 1000% with the corresponding tensile stress of 0.27 MPa and great resilience (550 cycles). Based on such HSF, a hybrid mechanoreceptor sensor is fabricated, which can simultaneously implement slow adaptive and fast adaptive pulses like human skin. This device realizes the detection of a variety of human movements such as joint movement, vocalization, or pulse and high‐frequency vibration signal recognition, which demonstrates its potential applications in bio‐integrated electronics. To mimic real human skin, a double network hydrogel is synthesized based on hydrophobic‐polyacrylamide/silk fibroin (HSF), which exhibits skin‐like mechanical properties (stretchability, resilience, and tear resistance). Based on the HSF, a hybrid mechanoreceptor sensor is fabricated, which can simultaneously implement slow adaptive and fast adaptive pulses like human skin.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.202111747