scholarly journals Stretchable, Rehealable, Recyclable, and Reconfigurable Integrated Strain Sensor for Joint Motion and Respiration Monitoring

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Chuanqian Shi ◽  
Zhanan Zou ◽  
Zepeng Lei ◽  
Pengcheng Zhu ◽  
Guohua Nie ◽  
...  
Keyword(s):  
Stretchable Electronics ◽  
Joint Motion ◽  
Wearable Electronics ◽  
Strain Sensing ◽  
Eutectic Liquid ◽  
Respiration Monitoring ◽  
Sensing System ◽  
Liquid Metal Alloy ◽  
Highly Stretchable ◽  
Different Parts

Cutting-edge technologies of stretchable, skin-mountable, and wearable electronics have attracted tremendous attention recently due to their very wide applications and promising performances. One direction of particular interest is to investigate novel properties in stretchable electronics by exploring multifunctional materials. Here, we report an integrated strain sensing system that is highly stretchable, rehealable, fully recyclable, and reconfigurable. This system consists of dynamic covalent thermoset polyimine as the moldable substrate and encapsulation, eutectic liquid metal alloy as the strain sensing unit and interconnects, and off-the-shelf chip components for measuring and magnifying functions. The device can be attached on different parts of the human body for accurately monitoring joint motion and respiration. Such a strain sensing system provides a reliable, economical, and ecofriendly solution to wearable technologies, with wide applications in health care, prosthetics, robotics, and biomedical devices.

Stretchable Electronics: Ag Nanowire Reinforced Highly Stretchable Conductive Fibers for Wearable Electronics (Adv. Funct. Mater. 21/2015)

2015 ◽  
Vol 25 (21) ◽  
pp. 3105-3105 ◽  
Author(s):  
Seulah Lee ◽  
Sera Shin ◽  
Sanggeun Lee ◽  
Jungmok Seo ◽  
Jaehong Lee ◽  
...  
Keyword(s):  
Stretchable Electronics ◽  
Wearable Electronics ◽  
Highly Stretchable ◽  
Conductive Fibers ◽  
Ag Nanowire

Repeatability and Extended Time Stability Study of an Additively Printed Strain Gauge Under Different Load Conditions

2021 ◽  
Author(s):  
Pradeep Lall ◽  
Jinesh Narangaparambil ◽  
Tony Thomas ◽  
Kyle Schulze
Keyword(s):  
Strain Gauge ◽  
Printed Electronics ◽  
Performance Testing ◽  
Temperature Limit ◽  
Stability Study ◽  
Strain Gauges ◽  
Gauge Factor ◽  
Wearable Electronics ◽  
Strain Sensing ◽  
Sintering Conditions

Abstract Printed electronics has found new applications in wearable electronics owing to the opportunities for integration, and the ability of sustaining folding, flexing and twisting. Continuous monitoring necessitates the production of sensors, which include temperature, humidity, sweat, and strain sensors. In this paper, a process study was performed on the FR4 board while taking into account multiple printing parameters for the direct-write system. The process parameters include ink pressure, print speed, and stand-off height, as well as their effect on the trace profile and print consistency using white light interferometry analysis. The printed traces have also been studied for different sintering conditions while keeping the FR4 board’s temperature limit in mind. The paper also discusses the effect of sintering conditions on mechanical and electrical properties, specifically shear load to failure and resistivity. The data from this was then used to print strain gauges and compared them to commercially available strain gauges. By reporting the gauge factor, the printed strain gauge has been standardized. The conductive ink’s strain sensing capabilities will be studied under tensile cyclic loading (3-point bending) at various strain rates and maximum strains. Long-term performance testing will be carried out using cyclic tensile loads.

Highly Stretchable Sheath–Core Yarns for Multifunctional Wearable Electronics

2020 ◽  
Author(s):  
Guangming Cai ◽  
Baowei Hao ◽  
Lei Luo ◽  
Zhongming Deng ◽  
Ruquan Zhang ◽  
...  
Keyword(s):  
Wearable Electronics ◽  
Highly Stretchable
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