Hofmeister effect regulated gel iontronic sensors for  wide-range pressure perception

Zilong He; Yonghuan Chen; Jiang Li; Jihan Qu; Li Chen; Fengyu Li

doi:10.59717/j.xinn-mater.2024.100078

The Innovation Materials > 2024 Vol. 2 > No. 3 > 100078

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Hofmeister effect regulated gel iontronic sensors for wide-range pressure perception

1.
College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Speed Capability Research, Su Bingtian Center for Speed Research and Training, Jinan University, Guangzhou 510632, China
2.
Department of General Practice, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
3.
College of Chemistry, Zhengzhou University, Zhengzhou 450001, China

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Corresponding authors: chenli@301hospital.com.cn (L. C.); lifengyu@jnu.edu.cn (F. L.)
Received Date: March 11, 2024

Accepted Date: May 21, 2024

Published Online: May 28, 2024

The Innovation Materials 2(3), https://doi.org/10.59717/j.xinn-mater.2024.100078 | Cite this article

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PUBLIC SUMMARY

PUBLIC SUMMARY
1. The gradient elastic modulus of the skin is key to achieving wide-range pressure perception.
  
  The modulus of hydrogels can be precisely regulated by Hofmeister effect.
  
  An iontronic sensor with a biomimetic gradient modulus (BGGITS) for ultra-sensitive, wide-range perception was proposed.

ABSTRACT

ABSTRACT

Flexible pressure sensors, vital for medical, human-machine interaction, and intelligent recognition applications due to their high-sensitivity, excellent-linearity, and broad-pressure response, face challenges in achieving a harmonious balance among these attributes. Inspired by the gradient modulus in human skin layers, we proposed a pioneering method to adjust the gradient elastic modulus of amino trimethylene phosphonic acid (ATMP)-assisted polyvinyl alcohol (PVA) hydrogel through the Hofmeister effect, introducing micro-pyramid electrodes. This innovative approach successfully constructs a bio-gradient gel iontronic sensor (BGGITS) with an ultra-wide-range perception. The BGGITS exhibits a linear high-sensitivity of 700 kPa^-1 within a broad-pressure detection range of up to 800 kPa. The composite design, integrating gradient gel and microstructure electrodes, demonstrates exceptional pressure resolution and mechanical stability. This biomimetic skin pressure sensor holds promise for achieving linear high-sensitivity across a broader pressure range simultaneously and may find applications in electronic skin for health monitoring and tactile perception in the future.
- Pressure Perception /
- Hofmeister Effect /
- Bio-gradient Elastic Modulus /
- Iontronic Sensor /
- High-Sensitivity /
- Wide-Linearity

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REFERENCES

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Cite this article:

He Z., Chen Y., Li J., et al., (2024). Hofmeister effect regulated gel iontronic sensors for wide-range pressure perception. The Innovation Materials 2(3): 100078. https://doi.org/10.59717/j.xinn-mater.2024.100078

He Z., Chen Y., Li J., et al., (2024). Hofmeister effect regulated gel iontronic sensors for wide-range pressure perception. The Innovation Materials 2(3): 100078. https://doi.org/10.59717/j.xinn-mater.2024.100078

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Hofmeister effect regulated gel iontronic sensors for wide-range pressure perception

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