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Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

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MXene-Based Temperature and Pressure-Sensing System with an Integrated Microsupercapacitor Array.

Xinmiao Wang^1,2,3, Zemao Xiao^1,2, Bo Yang^2,3

¹Xinjiang Production & Construction Corps Key Laboratory of Advanced Energy Storage Materials and Technology and Department of Physics, College of Science, Shihezi University, Shihezi 832003, China.

ACS Applied Materials & Interfaces

|May 20, 2026

Summary

This study introduces a flexible, inkjet-printed sensor system using MXene materials for simultaneous temperature and pressure monitoring. The integrated microsupercapacitors power the sensors, enabling accurate physiological signal detection without interference.

Keywords:

MXene crosstalk-free finite element analysis physiological signal monitoring supercapacitors temperature and pressure sensors

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Area of Science:

Intelligent electronics
Materials science
Sensor technology

Background:

High-efficiency multifunctional sensing systems are crucial for intelligent electronics but face significant challenges.
Existing systems often struggle with integrating multiple sensing capabilities and reliable power sources.

Purpose of the Study:

To develop a novel dual temperature/pressure sensor system for physiological signal detection.
To integrate a flexible MXene-based microsupercapacitor array with a waterborne polyurethane (WPU)/MXene bimodal sensor array.

Main Methods:

Fabrication of a 3x3 MXene-based microsupercapacitor array using inkjet printing.
Integration with a 3x3 WPU/MXene bimodal sensor array.
Characterization of sensor performance for temperature and pressure detection.

Main Results:

The MXene-based microsupercapacitors achieved high energy density (2.12 mW h cm⁻²) and power density (22.59 mW cm⁻²).
The WPU/MXene composite demonstrated excellent temperature sensitivity (-1.17%/°C) and pressure sensitivity (0.211 kPa⁻¹).
The system successfully monitored physiological signals like finger pressure and respiration without interference.

Conclusions:

The developed dual sensor system offers a reliable and integrated solution for physiological monitoring.
MXene-based materials provide a versatile platform for next-generation multifunctional sensing systems.
The study highlights the potential for crosstalk-free, multiparameter detection in intelligent electronics.