Ti₃C₂T_X MXene for Sensing Applications: Recent Progress, Design Principles, and Future Perspectives

ACS Nano, Journal Year: 2021, Volume and Issue: 15(3), P. 3996 - 4017

Published: March 11, 2021

Sensors are becoming increasingly significant in our daily life because of the rapid development electronic and information technologies, including Internet Things, wearable electronics, home automation, intelligent industry, etc. There is no doubt that their performances primarily determined by sensing materials. Among all potential candidates, layered nanomaterials with two-dimensional (2D) planar structure have numerous superior properties to bulk counterparts which suitable for building various high-performance sensors. As an emerging 2D material, MXenes possess several advantageous features adjustable surface properties, tunable bandgap, excellent mechanical strength, making them attractive applications. Herein, we particularly focus on recent research progress MXene-based sensors, discuss merits derivatives as materials collecting signals, try elucidate design principles working mechanisms corresponding strain/stress gas electrochemical optical humidity In end, analyze main challenges future outlook sensor

Language: Английский

---

Flexible MXene‐Based Composites for Wearable Devices

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(22)

Published: March 8, 2021

Abstract In recent decades, flexible and wearable devices have been extensively investigated due to their promising applications in portable mobile electronics human motion monitoring. MXene, a novel growing family of 2D nanomaterials, demonstrates superiorities such as outstanding electrical conductivity, abundant terminal groups, unique layered‐structure, large surface area, hydrophilicity, making it be potential candidate material for devices. Numerous pioneering works are devoted develop MXene‐based composites with various functions designed structures. Therefore, the latest progress is summarized this review, focusing on preparation strategies, working mechanisms, performances, sensors, supercapacitors, electromagnetic interference shielding materials. Moreover, current challenges future outlooks also discussed.

Language: Английский

---

Smart Ti₃C₂T_x MXene Fabric with Fast Humidity Response and Joule Heating for Healthcare and Medical Therapy Applications

ACS Nano, Journal Year: 2020, Volume and Issue: 14(7), P. 8793 - 8805

Published: July 9, 2020

An increasing utilization of flexible healthcare electronics and biomedicine-related therapeutic materials urges the development multifunctional wearable/flexible smart fabrics for personal therapy health management. However, it is currently a challenge to fabricate on-body electronic devices with reliable mechanical flexibility, excellent breathability, self-controllable joule heating effects. Here, we MXene-based fabric by depositing 2D Ti3C2Tx nanosheets onto cellulose fiber nonwoven via special MXene–cellulose interactions. Such exhibit sensitive reversible humidity response upon H2O-induced swelling/contraction channels between MXene interlayers, enabling wearable respiration monitoring application. Besides, can also serve as low-voltage thermotherapy platform due its fast stable electro-thermal response. Interestingly, water molecular extraction induces electrical heating, i.e., functioning temperature alarm, which allows real-time without low-temperature burn risk. Furthermore, metal-like conductivity renders an Joule effect, moderately kill bacteria surrounding wound in bacteria-infected healing therapy. This work introduces suitable next-generation mobile medical

Language: Английский

---

Superhydrophobic and breathable smart MXene-based textile for multifunctional wearable sensing electronics

Chemical Engineering Journal, Journal Year: 2020, Volume and Issue: 406, P. 126898 - 126898

Published: Sept. 6, 2020

Language: Английский

---

Sensing with MXenes: Progress and Prospects

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(47)

Published: May 3, 2021

Abstract Various fields of study consider MXene a revolutionary 2D material. Particularly in the field sensors, metal‐like high electrical conductivity and large surface area MXenes are desirable characteristics as an alternative sensor material that can transcend boundaries existing technology. This critical review provides comprehensive overview recent advances MXene‐based technology roadmap for commercializing sensors. The sensors systematically categorized chemical, biological, physical Each category is then classified into various subcategories depending on electrical, electrochemical, structural, or optical sensing mechanism, which four fundamental working mechanisms Representative structural approaches boosting performance each presented. Finally, factors hinder discussed, several breakthroughs realizing commercially available suggested. broad insights pertaining to previous perspectives future generation low‐cost, high‐performance, multimodal soft‐electronics applications.

Language: Английский

---

Carbon Nanotubes/Hydrophobically Associated Hydrogels as Ultrastretchable, Highly Sensitive, Stable Strain, and Pressure Sensors

ACS Applied Materials & Interfaces, Journal Year: 2020, Volume and Issue: 12(4), P. 4944 - 4953

Published: Jan. 8, 2020

Conductive hydrogels have become one of the most promising materials for skin-like sensors because their excellent biocompatibility and mechanical flexibility. However, limited stretchability, low toughness, fatigue resistance lead to a narrow sensing region insufficient durability hydrogel-based sensors. In this work, an extremely stretchable, highly tough, anti-fatigue conductive nanocomposite hydrogel is prepared by integrating hydrophobic carbon nanotubes (CNTs) into hydrophobically associated polyacrylamide (HAPAAm) hydrogel. hydrogel, amphiphilic sodium dodecyl sulfate was used ensure uniform dispersion CNTs in network, interactions between matrix CNT surface formed, greatly improving properties The obtained CNTs/HAPAAm showed stretchability (ca. 3000%), toughness (3.42 MJ m-3), great property. Moreover, it exhibits both high tensile strain sensitivity wide ranges (gauge factor = 4.32, up 1000%) linear (0.127 kPa-1) large-pressure within 0-50 kPa. can sensitively stably detect full-range human activities (e.g., elbow rotation, finger bending, swallowing motion, pronouncing) handwriting, demonstrating hydrogel's potential as wearable pressure flexible devices.

Language: Английский

---

Flexible MXene-Decorated Fabric with Interwoven Conductive Networks for Integrated Joule Heating, Electromagnetic Interference Shielding, and Strain Sensing Performances

ACS Applied Materials & Interfaces, Journal Year: 2020, Volume and Issue: 12(12), P. 14459 - 14467

Published: March 9, 2020

Although flexible and multifunctional textile-based electronics are promising for wearable devices, it is still a challenge to seamlessly integrate excellent conductivity into textiles without sacrificing their intrinsic flexibility breathability. Herein, the vertically interconnected conductive networks constructed based on meshy template of weave cotton fabrics with interwoven warp weft yarns. The two-dimensional early transition metal carbides/nitrides (MXenes), unique metallic hydrophilic surfaces, uniformly intimately attached preformed fabric via spray-drying coating approach. Through adjusting cycles, degree interconnectivity precisely tuned, thereby affording highly breathable integrated Joule heating, electromagnetic interference (EMI) shielding strain sensing performances. Interestingly, triggered by architecture, MXene-decorated low loading 6 wt % (0.78 mg cm-2) offer an outstanding electrical 5 Ω sq-1. further endows superior heating performance temperature up 150 °C at supply voltage V, EMI performance, sensitive responses human motion. Consequently, this work offers novel strategy versatile design devices.

Language: Английский

---

Ti₃C₂T_x MXene-Based Flexible Piezoresistive Physical Sensors

ACS Nano, Journal Year: 2022, Volume and Issue: 16(2), P. 1734 - 1758

Published: Feb. 11, 2022

MXenes have received increasing attention due to their two-dimensional layered structure, high conductivity, hydrophilicity, and large specific surface area. Because of these distinctive advantages, are considered as very competitive pressure-sensitive materials in applications flexible piezoresistive sensors. This work reviews the preparation methods, basic properties, assembly methods recent developments sensor applications. The MXene-based sensors can be categorized into one-dimensional fibrous, planar, three-dimensional according various structures. trends multifunctional integration pressure also summarized. Finally, we end this review by describing opportunities challenges for great prospects field

Language: Английский

---

Highly Sensitive Ultrathin Flexible Thermoplastic Polyurethane/Carbon Black Fibrous Film Strain Sensor with Adjustable Scaffold Networks

Nano-Micro Letters, Journal Year: 2021, Volume and Issue: 13(1)

Published: Jan. 25, 2021

In recently years, high-performance wearable strain sensors have attracted great attention in academic and industrial. Herein, a conductive polymer composite of electrospun thermoplastic polyurethane (TPU) fibrous film matrix-embedded carbon black (CB) particles with adjustable scaffold network was fabricated for high-sensitive sensor. This work indicated the influence stereoscopic structure built under various rotating speeds collection device electrospinning process on electrical response TPU/CB makes sensor exhibit combined characters high sensitivity stretching (gauge factor 8962.7 at 155% strain), fast time (60 ms), outstanding stability durability (> 10,000 cycles) widely workable range (0-160%). high-performance, wearable, flexible has broad vision application such as intelligent terminals, skins, voice measurement human motion monitoring. Moreover, theoretical approach used to analyze mechanical property model based tunneling theory modified describe relative change resistance upon applied strain. Meanwhile, two equations from this were first proposed offered an effective but simple number paths distance adjacent particles.

Language: Английский

---

Multifunctional MXene/CNTs based flexible electronic textile with excellent strain sensing, electromagnetic interference shielding and Joule heating performances

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 438, P. 135587 - 135587

Published: March 3, 2022

Language: Английский

---