MXenes for Wearable Physical Sensors toward Smart Healthcare

ACS Nano, Journal Year: 2024, Volume and Issue: 18(36), P. 24705 - 24740

Published: Aug. 26, 2024

The gradual rise of personal healthcare awareness is accelerating the deployment wearable sensors, whose ability acquiring physiological vital signs depends on sensing materials. MXenes have distinct chemical and physical superiorities over other 2D nanomaterials for sensors. This review presents a comprehensive summary latest advancements in MXenes-based materials It begins with an introduction to special structural features performance, followed by in-depth exploration versatile functionalities. A detailed description different mechanisms also included illustrate contribution performance its improvement. In addition, real-world applications sensors monitoring are as well. remaining challenges their promising opportunities finally narrated, conjunction prospective future development.

Language: Английский

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Muscle-Inspired Anisotropic Aramid Nanofibers Aerogel Exhibiting High-Efficiency Thermoelectric Conversion and Precise Temperature Monitoring for Firefighting Clothing

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: April 14, 2025

Abstract Enhancing the firefighting protective clothing with exceptional thermal barrier and temperature sensing functions to ensure high fire safety for firefighters has long been anticipated, but it remains a major challenge. Herein, inspired by human muscle, an anisotropic aerogel (ACMCA) precise self-actuated monitoring performance is developed combining aramid nanofibers eicosane/MXene form anisotropically oriented conductive network. By two synergies of negative temperature-dependent eicosane, which induces high-temperature differential, directionally ordered MXene that establishes network along directional freezing direction. The resultant ACMCA exhibited remarkable thermoelectric properties, S values reaching 46.78 μV K −1 κ as low 0.048 W m at room temperature. Moreover, prepared electrical responsiveness variations, facilitating its application in intelligent systems. designed could be incorporated into layer, demonstrating wide range (50–400 °C) rapid response time early alerts (~ 1.43 s). This work provides novel insights design temperature-sensitive clothing.

Language: Английский

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Shape‐Programmable Lamellar Aerogel Enabling 3D Wireless Point‐of‐Care Electronics for Assistance in Pressure Injury Prevention

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 31, 2024

Abstract Bedridden patients are at high‐pressure injuries risk, and timely turning or moving a bedridden patient is crucial to release localized pressure reduce injury risk. Pressure‐sensing electronics can collect real‐time signals reflecting the movement of help carers evaluate risk early intervene timely. However, most pressure‐sensing cannot be seamlessly mounted on curved surface skin, resulting in signal instability inaccuracy. Besides, detecting small pressures over wide range challenging. Herein, lamellar shape‐memory conductive (LSMC) aerogel developed assemble 3D wireless point‐of‐care for assisting prevention. The structure makes LSMC highly compressible, endowing assembled with high sensitivity low detection limit. Moreover, excellent effect allows fabrication certain surfaces adaptive wearing provides sensitive stable signals. Furthermore, monitoring system that integrates aerogel‐based technology developed. records locations (e.g., foot), which facilitates analyze an individual's time body movements, assess timely; this greatly benefits

Language: Английский

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Chameleon-inspired adaptive photoreactive polyurethane films for dynamic secure multidimensional “burn-after-reading” encryption

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159316 - 159316

Published: Jan. 6, 2025

Language: Английский

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Facile Design of Highly Stretchable and Conductive Crumpled Graphene/NiS₂ Films for Multifunctional Applications

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Abstract The cost‐effective and scalable synthesis patterning of soft nanomaterial composites with improved electrical conductivity mechanical stretchability remains challenging in wearable devices. This work reports a scalable, low‐cost fabrication approach to directly create pattern crumpled porous graphene/NiS 2 nanocomposites high through laser irradiation combined electrodeposition pre‐strain strategy. With modulated conductivity, the nanocomposite can be readily patterned into target geometries for application standalone stretchable sensing platform. By leveraging energy harvested from kinetic motion triboelectric nanogenerator (TENG) stored micro‐supercapacitor arrays (MSCAs) drive biophysical sensors, system is demonstrated monitor human motions, body temperature, toxic gas exposed environment. material selections, design strategies, approaches this study provide functional tunable properties future high‐performance bio‐integrated electronics.

Language: Английский

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Research progress on flexible stress and strain sensing based on multi-dimensional MXene composites

Materials Today Chemistry, Journal Year: 2025, Volume and Issue: 44, P. 102569 - 102569

Published: Feb. 10, 2025

Language: Английский

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4D Encryption System: Hydrophilic–Hydrophobic Polyurethane Actuators with Smart Color Switching for High‐Capacity Data Storage

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Abstract Natural communication methods have influenced the creation of sophisticated artificial materials capable coherent and abundant responses to stimuli, a crucial necessity for developing applications such as dynamic encryption systems high‐density information storage. However, existing storage are limited by predictable, single‐stimulus lack capacity dynamic, continuous, programmable changes. To address this gap, bioinspired multicolor fluorescent polyurethane actuator is developed that combines color shape adaptability within single material platform. This smart mimics turgor‐driven movements Oxalis corniculata through hydrophilic/hydrophobic network enables water diffusion, hydrogen bonding, bond exchange. It responds multiple including temperature, pH, excitation wavelength, exhibiting reversible multi‐state deformations fluorescence across red, green, blue, even white light. The deformation behavior supported finite element simulations, ensuring precise control predictability. Additionally, tunable trichromatic underpins 3D 4D encoding system, demonstrating increased security. employment micro‐processing technology in fabrication micro‐hidden optical chips has been demonstrated, thus paving way underwater technologies adaptive materials.

Language: Английский

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Superelastic and Ultra‐Soft MXene/CNF Aerogel@PDMS‐Based Dual‐Modal Pressure Sensor for Complex Stimuli Monitoring

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract In the face of complex pressure stimuli, sensor is required to sense magnitude static force and sensitive transient mechanical stimuli. However, an individual sensing mechanism has difficulty meeting practical needs simultaneously. this work, MXene/cellulose nanofiber (CNF) aerogel@PDMS‐based dual‐modal reported for stimuli monitoring. The aerogel‐based material fabricated through MXene nanosheets CNFs. Aerogel ice crystals sublimate then form a 3D porous structure during vacuum freeze‐drying. After attaching PDMS dilution, aerogels achieve >200 reversible compressions, hysteresis energy reduced by 57.8%. By utilizing both triboelectric piezoresistive properties MXene/CNF aerogel@PDMS, achieved. effect acquires high sensitivity 26.95 kPa −1 under low (3.46 Pa–3.32 kPa) responds vibrations up 1000 Hz. On basis variable resistances aerogels, can be used identify pressures stably (167 , 1.56–26.64 kPa). Combining two effects broadens lower limit high‐sensitivity monitoring, realizing static‐dynamic detection simultaneously breaking frequency materials. Finally, demonstrated monitor physiological physical signals, such as pronunciation, gestures, tone recognition.

Language: Английский

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Progress in Wearable Bionic Sensors for Biomedical Applications

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Abstract With the continuous advancements in flexible electronics and growing emphasis on personal health, wearable sensing systems for biomedical applications have garnered significant attention. Wearable sensors with bionic inspired microstructures emerged as an effective strategy enabling innovative designs optimizing performance. These not only exhibit high sensitivity biocompatibility but also feature unique additional properties, such self‐healing hydrophobicity, adhesiveness, offering substantial advantages over traditional sensors. Consequently, they enable efficient detection monitoring of various health signals daily life. This review systematically introduces common materials utilized fabrication sensors, including polymers substrates, active layers, conductive electrodes. Subsequently, types structures enhancing sensors’ mechanical electronic properties are discussed. Additionally, recent presented. Ultimately, challenges future directions this field critically analyzed.

Language: Английский

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Flexible pressure sensor based on CNTs/CB/PDMS sponge with porous and microdome structures for sitting posture discrimination

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157878 - 157878

Published: Nov. 1, 2024

Language: Английский

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