Recent Progress in Ti₃C₂T_x MXene-Based Flexible Pressure Sensors

Abstract

The rapid development of consumer electronics, artificial intelligence, and clinical medicine generates an increasing demand for flexible pressure sensors, whose performance depends significantly on sensitive materials with high flexibility and proper conductivity. MXene, a type of 2D nanomaterial, has attracted extensive attention due to its good electrical conductivity, hydrophilicity, and flexibility. The synthesis methods for MXenes make it relatively easy to control their microstructure and surface termination groups. Hence, MXenes can obtain peculiar microstructures and facilely combine with other functional materials, making them promising prospects for use in flexible pressure sensors. In this Review, recent advances in MXenes are summarized, mainly focusing on the synthesis methods and their application in flexible pressure sensors. Finally, the challenges and potential solutions for future development are also discussed.

Transparent stretchable hydrogel sensors: materials, design and applications

“…Flexible sensors attract extensive attention due to their portability, 1 mechanical robustness, 2 high flexibility 3 and great conformability, 4 which can transform external stimuli, such as strain, 5,6 pressure, 7,8 temperature, 9,10 and chemical substances, 11,12 into detectable signals (such as resistance, 13 color, 14 voltage, 15 capacitance 16 ). A hydrogel is a kind of 3D cross-linked network composed of hydrophilic polymer chains with an aqueous-rich environment.…”

Versatile van der Waals heterostructures of γ-GeSe with h-BN/graphene/MoS2

“…The successful exfoliation of graphene initiated a new era of two-dimensional (2D) materials. 1 A large family of 2D materials, including transition metal dichalcogenides (TMDs), 2,3 phosphorene, 4,5 hexagonal boron nitride (h-BN), 6,7 and MXenes, 8,9 have attracted extensive attention owing to their distinct mechanical, electronic, and optical properties. A single type of 2D material generally cannot meet the requirements of practical applications, but the construction of van der Waals heterostructures (vdWHs) by integrating different types of 2D layers together renders additional functionality and promotes performance.…”

Optical tactile sensor using scattering inside sol–gel-derived flexible macroporous monoliths

“…[8] Improvements continue to be made using a variety of materials, and especially in the last decade, composites of two-dimensional nanomaterials have been investigated to increase pressure sensitivity. [9][10][11][12][13] Optical sensors that can measure simple tactile sensation and pressure distribution and the surface shape of a contacted object have also been developed. [14] These tactile sensors have advantages and disadvantages in terms of mechanical properties, durability, sensitivity, etc.…”