PDMS-Encapsulated MXene@Polyester Fabric Strain Sensor for Multifunctional Sensing Applications.

Wengang Lu,Zhiyuan Wang,Fuzhuo Lian,Beenish Mustafa,Geliang Yu

doi:10.3390/nano12050871

Wengang Lu, Zhiyuan Wang + Show 3 more

Open Access

https://doi.org/10.3390/nano12050871

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Abstract

Flexible strain sensors based on 2D materials have been proven effective for wearable health monitoring devices, human motion detection, and fitness applications. These sensors are flexible, light, and user-friendly, but their sensitivity and detection range need to be enhanced. Among many 2D materials, MXene attracts much interest due to its remarkable properties, such as high electrical conductivity, excellent mechanical properties, flexibility, and good hydrophilicity. However, it is a challenge to fabricate strain sensors with extreme sensitivity and a wide sensing range. In this work, a multifunctional, cost-effective, and highly sensitive PDMS-encapsulated MXene@polyester fabric strain sensor was fabricated. Firstly, complete adsorption of MXene within the fabric formed conductive networks, and then PDMS was used to endow superhydrophobicity and corrosion resistance. The strain sensor demonstrated multifunctional applications and outstanding performance, such as long-term stability (over 500 cycles) and a wide sensing range (8%). The proposed sensor has promising potential for wearable electronic devices such as health monitoring systems and physiological sensing applications.

Highlights

Academic Editors: Filippo GiannazzoStretchable and wearable strain sensors have generated significant interest in various applications, from skin detection to health monitoring systems [1–6]
A series of systematic characterization techniques were carried out to verify the successful preparation of Ti3 C2 Tx MXene nanosheets and PDMS-encapsulated MXene@polyester fabric (PMPF)
MXene was prepared by the minimally intense layer delamination (MILD) method, and the PMPF strain sensor

Summary

Introduction

Stretchable and wearable strain sensors have generated significant interest in various applications, from skin detection to health monitoring systems [1–6]. Wearable stress and strain sensors are becoming more popular as the development of intelligent electronic gadgets accelerates. Flexible strain sensors based on fabric have obvious advantages in flexible electronic equipment [10–13]. These are easy to fabricate; inexpensive; and resistant to bending, stretching, torsion, and other complex deformations. Many strain sensors have been fabricated using conductive nanomaterials such as graphene [14–16], MXene [11,17–19], and silver nanowires [20]. MXene has been intensively explored for strain sensing applications [21]. MXene is a class of 2D materials with high electrical conductivity, excellent mechanical properties, and specific capacitance. Yu et al designed a polyester fabric strain sensor by using 80% polyester and 20% TPU elastic fabric

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