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A highly flexible and sensitive piezoresistive sensor based on MXene with greatly changed interlayer distances
Yanan Ma1, Nishuang Liu1, Luying Li1
1Center for Nanoscale Characterization & Devices (CNCD), Wuhan National Laboratory for Optoelectronics (WNLO), School of Physics, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China.
Nature Communications
|November 2, 2017
Summary
This study introduces a new flexible piezoresistive sensor using MXene materials. The sensor leverages MXene
Area of Science:
- Materials Science
- Nanotechnology
- Sensor Technology
Background:
- MXenes are a novel class of 2D materials with diverse applications.
- The pressure-dependent change in MXene interlayer distance has not been exploited for practical applications.
Purpose of the Study:
- To develop a highly flexible and sensitive piezoresistive sensor utilizing the unique property of MXenes.
- To elucidate the working mechanism of such a sensor.
Main Methods:
- In situ transmission electron microscopy (TEM) to observe interlayer distance changes under pressure.
- Fabrication and testing of a MXene-based piezoresistive sensor.
Main Results:
- Direct visualization of significantly altered MXene interlayer distances under external pressure.
- The developed sensor exhibits high sensitivity (Gauge Factor ~180.1) and a fast response time (<30 ms).
- The sensor demonstrates excellent reversible compressibility and can detect subtle human movements.
Conclusions:
- MXene's pressure-dependent interlayer distance is a viable mechanism for piezoresistive sensing.
- This MXene-based sensor offers a promising platform for flexible and sensitive pressure detection applications.
