High-Performance Flexible Piezoresistive Sensor Based on Ti3C2Tx MXene with a Honeycomb-like Structure for Human Activity Monitoring

Su, Yue; Ma, Kainan; Yuan, Fang; Tang, Jun; Liu, Ming; Zhang, Xu

doi:10.3390/mi13060821

Cited by 11 publications

(13 citation statements)

References 32 publications

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“…The preparation method of MXene was slightly modified, according to previous work [ 22 , 23 ]. Typically, 3 g MAX phase precursor (Ti 3 AlC 2 ) powder were gradually added into reactor for selective etching with 60 mL of 40% HF.…”

Section: Methodsmentioning

confidence: 99%

In Situ Growth Intercalation Structure MXene@Anatase/Rutile TiO2 Ternary Heterojunction with Excellent Phosphoprotein Detection in Sweat

et al. 2022

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Abnormal protein phosphorylation may relate to diseases such as Alzheimer’s, schizophrenia, and Parkinson’s. Therefore, the real-time detection of phosphoproteins in sweat was of great significance for the early knowledge, detection, and treatment of neurological diseases. In this work, anatase/rutile TiO2 was in situ grown on the MXene surface to constructing the intercalation structure MXene@anatase/rutile TiO2 ternary heterostructure as a sensing platform for detecting phosphoprotein in sweat. Here, the intercalation structure of MXene acted as electron and diffusion channels for phosphoproteins. The in situ grown anatase/rutile TiO2 with n-n-type heterostructure provided specific adsorption sites for the phosphoproteins. The determination of phosphoprotein covered concentrations in sweat, with linear range from 0.01 to 1 mg/mL, along with a low LOD of 1.52 μM. It is worth noting that, since the macromolecular phosphoprotein was adsorbed on the surface of the material, the electrochemical signal gradually decreased with the increase of phosphoprotein concentration. In addition, the active sites in the MXene@anatase/rutile TiO2 ternary heterojunction and synergistic effect of the heterojunction were verified by first-principle calculations to further realize the response to phosphoproteins. Additionally, the effective diffusion capacity and mobility of phosphoprotein molecules in the ternary heterojunction structure were studied by molecular dynamics simulation. Furthermore, the constructed sensing platform showed high selectivity, repeatability, reproducibility, and stability, and this newly developed sensor can detect for phosphoprotein in actual sweat samples. This satisfactory sensing strategy could be promoted to realize the noninvasive and continuous detection of sweat.

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Section: Methodsmentioning

confidence: 99%

In Situ Growth Intercalation Structure MXene@Anatase/Rutile TiO2 Ternary Heterojunction with Excellent Phosphoprotein Detection in Sweat

et al. 2022

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“…13,17,88 For instance, a highly efficient flexible piezoresistive sensor was created for human activity monitoring by integrating MXenes into a honeycomb-like structure formed using femtosecond filamentating pulses. 89 The sensing mechanism was based on the modification of the conductive paths connecting the top inter-digital electrodes and the bottom micro-structured films coated with MXenes. The resulting sensor exhibited a sensitivity of 0.61 kPa À1 , a quick response time, and exceptional reliability and stability.…”

Section: Prosthetic Devices and Athlete/motion Monitoringmentioning

confidence: 99%

“…The resulting sensor exhibited a sensitivity of 0.61 kPa −1 , a quick response time, and exceptional reliability and stability. 89 In another study, a versatile pH-induced oil–water interfacial self-assembly method was developed for fabricating MXene films at the foot-level. 88 These MXene films could be easily transferred onto flexible substrates such as glass plate, quartz plate, or polyethylene terephthalate.…”

Section: Mxene-based E-skinsmentioning

confidence: 99%

Advancements in MXene-based composites for electronic skins

Iravani,

Rabiee,

Makvandi

2024

J. Mater. Chem. B

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Section: Direct Printing Of Sensing Elementmentioning

confidence: 99%

Recent developments in stretchable and flexible tactile sensors towards piezoresistive systems: A review

Saxena,

Patra

2023

Polymers for Advanced Techs

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Stretchable and flexible piezoresistive sensors (SFPSs) can detect mechanical stimuli in terms of electrical response and provide adaptability to use with complex surfaces, whether stationary or moving. Its stretchable and flexible nature makes it ideal for detecting large strains, localized pressure, bending, and twisting. SFPSs can detect pressure and strain in a broad range. SFPSs have ease of manufacturing, high sensitivity, better durability, easy processing, and economic development. These qualities of SFPSs can open a wide range of application possibilities, such as healthcare, human motion detection, a safe environment to interact with robots, automation, and soft robotics. The discussion in this article starts from the sensing mechanism, design development over the years, a variety of materials used for substrates and to provide conductivity to the sensors, fabrication processes explored and developed, enhancement in the performance characteristics, to have future directions. Over the last decades, exponential development has occurred in SFPSs systems based on design mechanisms, materials used, and fabrication techniques, even though several technological and design challenges remain undetermined and bear decisive interdisciplinary intervention to address them.

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High-Performance Flexible Piezoresistive Sensor Based on Ti3C2Tx MXene with a Honeycomb-like Structure for Human Activity Monitoring

Cited by 11 publications

References 32 publications

In Situ Growth Intercalation Structure MXene@Anatase/Rutile TiO2 Ternary Heterojunction with Excellent Phosphoprotein Detection in Sweat

In Situ Growth Intercalation Structure MXene@Anatase/Rutile TiO2 Ternary Heterojunction with Excellent Phosphoprotein Detection in Sweat

Advancements in MXene-based composites for electronic skins

Recent developments in stretchable and flexible tactile sensors towards piezoresistive systems: A review

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