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Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment

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Published on: July 22, 2022

Bioinspired Conductive Enhanced Polyurethane Ionic Skin as Reliable Multifunctional Sensors.

Bicheng Zhao¹, Jiaqi Yan¹, Fen Long¹

¹Research Institution for Biomimetics and Soft Matter, The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, The State Key Laboratory of Marine Environmental Science (MEL), College of Ocean and Earth Sciences, Shenzhen Research Institute of Xiamen University, Xiamen University, 422 Siming Nan Road, Xiamen, 361005, People's Republic of China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|April 24, 2023

Summary

This summary is machine-generated.

New ionogels offer high conductivity and stable performance, overcoming limitations of traditional hydrogels. Researchers mimicked cell membranes to create durable materials suitable for advanced ionotronics.

Keywords:

bioinspired ionic conductivity ionogels multifunction sensor

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A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

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Published on: March 13, 2017

Area of Science:

Materials Science
Polymer Chemistry
Electrochemistry

Background:

Ionogels offer advantages over hydrogels, including no evaporation and stable performance.
Traditional ionogels suffer from low conductivity due to bulky ions hindering migration within polymer networks.

Purpose of the Study:

To develop ultradurable ionogels with enhanced mechanical properties and high electrical conductivity.
To mimic biological ion transport channels for improved ion migration.

Main Methods:

Impregnating ionic liquid (IL) into a water-based polyurethane (WPU) network.
Utilizing carboxylic acid in WPU's hard segment to form ionic conduction channels via hydrogen bonding.
Mimicking ion transport channels found in phospholipid bilayers.

Main Results:

Achieved ionogel conductivities exceeding 28-39 mS cm⁻¹.
Developed ionogels with adjustable mechanical properties (Young's modulus: 0.1-0.6 MPa), comparable to natural skin.
Demonstrated ultrahigh sensitivity (0.99-1.35) in strain sensors with a wide sensing range (0.1%-200%).

Conclusions:

The novel WPU-based ionogels exhibit superior conductivity and tunable mechanical properties.
The biomimetic design effectively creates ionic conduction channels, enhancing ion transport.
These ionogels show significant promise for environmentally stable and high-conductivity ionotronic applications.