Ultrastretchable and Self-Healing Conductors with Double Dynamic Network for Omni-Healable Capacitive Strain Sensors

Nano Letters ◽  
2021 ◽  
Author(s):  
Pan-Pan Jiang ◽  
Haili Qin ◽  
Jing Dai ◽  
Shu-Hong Yu ◽  
Huai-Ping Cong
Keyword(s):  
Dynamic Network ◽  
Strain Sensors ◽  
Self Healing ◽  
Capacitive Strain

scholarly journals Dynamic Nanohybrid-Polysaccharide Hydrogels for Soft Wearable Strain Sensing

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3574
Author(s):  
Pejman Heidarian ◽  
Hossein Yousefi ◽  
Akif Kaynak ◽  
Mariana Paulino ◽  
Saleh Gharaie ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Strain Sensors ◽  
Self Healing ◽  
Nano Materials ◽  
Strain Sensing ◽  
Ferric Ions ◽  
Research Activity ◽  
Adhesion Properties ◽  
High Mechanical Strength ◽  
The Moment

Electroconductive hydrogels with stimuli-free self-healing and self-recovery (SELF) properties and high mechanical strength for wearable strain sensors is an area of intensive research activity at the moment. Most electroconductive hydrogels, however, consist of static bonds for mechanical strength and dynamic bonds for SELF performance, presenting a challenge to improve both properties into one single hydrogel. An alternative strategy to successfully incorporate both properties into one system is via the use of stiff or rigid, yet dynamic nano-materials. In this work, a nano-hybrid modifier derived from nano-chitin coated with ferric ions and tannic acid (TA/Fe@ChNFs) is blended into a starch/polyvinyl alcohol/polyacrylic acid (St/PVA/PAA) hydrogel. It is hypothesized that the TA/Fe@ChNFs nanohybrid imparts both mechanical strength and stimuli-free SELF properties to the hydrogel via dynamic catecholato-metal coordination bonds. Additionally, the catechol groups of TA provide mussel-inspired adhesion properties to the hydrogel. Due to its electroconductivity, toughness, stimuli-free SELF properties, and self-adhesiveness, a prototype soft wearable strain sensor is created using this hydrogel and subsequently tested.

Highly viscoelastic, stretchable, conductive, and self-healing strain sensors based on cellulose nanofiber-reinforced polyacrylic acid hydrogel

Cellulose ◽  
2021 ◽  
Vol 28 (7) ◽  
pp. 4295-4311
Author(s):  
Yue Jiao ◽  
Kaiyue Lu ◽  
Ya Lu ◽  
Yiying Yue ◽  
Xinwu Xu ◽  
...  
Keyword(s):  
Polyacrylic Acid ◽  
Strain Sensors ◽  
Cellulose Nanofiber ◽  
Self Healing

scholarly journals Piezoelectrically enhanced capacitive strain sensors using GaN metal-insulator-semiconductor diodes

2003 ◽  
Vol 94 (9) ◽  
pp. 5958-5963 ◽  
Author(s):  
R. P. Strittmatter ◽  
R. A. Beach ◽  
G. S. Picus ◽  
T. C. McGill
Keyword(s):  
Strain Sensors ◽  
Metal Insulator ◽  
Metal Insulator Semiconductor ◽  
Capacitive Strain

Multifunctional Self-Healing Dual Network Hydrogels Constructed via Host–Guest Interaction and Dynamic Covalent Bond as Wearable Strain Sensors for Monitoring Human and Organ Motions

2021 ◽  
Vol 13 (12) ◽  
pp. 14612-14622
Author(s):  
Xiong Liu ◽  
Zhijun Ren ◽  
Fangfei Liu ◽  
Li Zhao ◽  
Qiangjun Ling ◽  
...  
Keyword(s):  
Covalent Bond ◽  
Strain Sensors ◽  
Self Healing

Polydiacetylene hydrogel self-healing capacitive strain sensor

2020 ◽  
Vol 8 (18) ◽  
pp. 6034-6041 ◽  
Author(s):  
V. Kesava Rao ◽  
Nitzan Shauloff ◽  
XiaoMeng Sui ◽  
H. Daniel Wagner ◽  
Raz Jelinek
Keyword(s):  
Strain Sensor ◽  
Mechanical Deformation ◽  
Human Motion ◽  
Self Healing ◽  
Highly Sensitive ◽  
Capacitive Strain

Highly sensitive and stretchable PDA–PAA–Cr3+ hydrogel capacitive strain sensor is fabricated and used to monitor mechanical deformation and human motion.

Low temperature tolerant, ultrasensitive strain sensors based on self-healing hydrogel for self-monitor of human motion

2019 ◽  
Vol 257 ◽  
pp. 116177 ◽  
Author(s):  
Shengping Dai ◽  
Xinghao Hu ◽  
Xiuzhu Xu ◽  
Xiaoting Cao ◽  
Yuewen Chen ◽  
...  
Keyword(s):  
Low Temperature ◽  
Human Motion ◽  
Strain Sensors ◽  
Self Healing

scholarly journals Dynamic Mussel-Inspired Chitin Nanocomposite Hydrogels for Wearable Strain Sensors

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1416 ◽  
Author(s):  
Pejman Heidarian ◽  
Abbas Z. Kouzani ◽  
Akif Kaynak ◽  
Ali Zolfagharian ◽  
Hossein Yousefi
Keyword(s):  
Mechanical Properties ◽  
Polyacrylic Acid ◽  
Strain Sensors ◽  
Self Healing ◽  
Network Stability ◽  
Ferric Ions ◽  
Trade Off ◽  
Nanocomposite Hydrogels ◽  
Healing Efficiency ◽  
Hydrogel Network

It is an ongoing challenge to fabricate an electroconductive and tough hydrogel with autonomous self-healing and self-recovery (SELF) for wearable strain sensors. Current electroconductive hydrogels often show a trade-off between static crosslinks for mechanical strength and dynamic crosslinks for SELF properties. In this work, a facile procedure was developed to synthesize a dynamic electroconductive hydrogel with excellent SELF and mechanical properties from starch/polyacrylic acid (St/PAA) by simply loading ferric ions (Fe3+) and tannic acid-coated chitin nanofibers (TA-ChNFs) into the hydrogel network. Based on our findings, the highest toughness was observed for the 1 wt.% TA-ChNF-reinforced hydrogel (1.43 MJ/m3), which is 10.5-fold higher than the unreinforced counterpart. Moreover, the 1 wt.% TA-ChNF-reinforced hydrogel showed the highest resistance against crack propagation and a 96.5% healing efficiency after 40 min. Therefore, it was chosen as the optimized hydrogel to pursue the remaining experiments. Due to its unique SELF performance, network stability, superior mechanical, and self-adhesiveness properties, this hydrogel demonstrates potential for applications in self-wearable strain sensors.

Ultrastretchable and Stable Strain Sensors Based on Antifreezing and Self-Healing Ionic Organohydrogels for Human Motion Monitoring

2019 ◽  
Vol 11 (9) ◽  
pp. 9405-9414 ◽  
Author(s):  
Jin Wu ◽  
Zixuan Wu ◽  
Xing Lu ◽  
Songjia Han ◽  
Bo-Ru Yang ◽  
...  
Keyword(s):  
Human Motion ◽  
Strain Sensors ◽  
Self Healing ◽  
Human Motion Monitoring

Self-healing and reprocessable bromo butylrubber based on combined ionic cluster formation and hydrogen bonding

2020 ◽  
Vol 11 (6) ◽  
pp. 1188-1197 ◽  
Author(s):  
Sebastian Stein ◽  
Anton Mordvinkin ◽  
Brigitte Voit ◽  
Hartmut Komber ◽  
Kay Saalwächter ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Network Formation ◽  
Cluster Formation ◽  
Dynamic Network ◽  
Self Healing ◽  
Competing Interactions ◽  
Ionic Cluster ◽  
Dynamic Network Formation

The properties of modified bromobutyl rubber are strongly influenced by competing interactions via hydrogen bridges and ionic cluster formation. Dynamic network formation enables self-healing and reprocessability of the material.

Self-Healing Hydrogel with a Double Dynamic Network Comprising Imine and Borate Ester Linkages

2019 ◽  
Vol 31 (15) ◽  
pp. 5576-5583 ◽  
Author(s):  
Yongsan Li ◽  
Lei Yang ◽  
Yuan Zeng ◽  
Yuwei Wu ◽  
Yen Wei ◽  
...  
Keyword(s):  
Dynamic Network ◽  
Self Healing ◽  
Borate Ester
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