Advanced Fiber Materials for Wearable Electronics

Advanced Fiber Materials, Год журнала: 2022, Номер 5(1), С. 12 - 35

Опубликована: Окт. 13, 2022

Abstract Fiber materials are highly desirable for wearable electronics that expected to be flexible and stretchable. Compared with rigid planar electronic devices, fiber-based provide significant advantages in terms of flexibility, stretchability breathability, they considered as the pioneers new generation soft wearables. The convergence textile science, engineering nanotechnology has made it feasible build functions on fibers maintain them during wear. Over last few years, fiber-shaped desired designability integration features have been intensively explored developed. As an indispensable part cornerstone great significance. Herein, research progress advanced fiber is reviewed, which mainly includes various material preparations, fabrication technologies representative studies different applications. Finally, key challenges future directions examined along analysis possible solutions. Graphical abstract

Язык: Английский

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Graphene Oxide‐Assisted Multiple Cross‐Linking of MXene for Large‐Area, High‐Strength, Oxidation‐Resistant, and Multifunctional Films

Advanced Functional Materials, Год журнала: 2022, Номер 33(11)

Опубликована: Дек. 30, 2022

Abstract Transition metal carbides/nitrides (MXenes) with metallic electrical conductivity and excellent processability attract increasing attention for assembling multifunctional macrostructures. However, the challenges, involving poor mechanical strength, inferior oxidation stability, limited scalable manufacturing, impede their wide applications. Herein, large‐area, high‐strength, ultra‐flexible hybrid films are developed through multiple physical chemical cross‐linking of MXene/cellulose facilitated by graphene oxide. The MXene‐based manifest significantly improved hydrophobicity, water/solvent resistance, meanwhile, maintain electromagnetic interference shielding performance. X‐band surface‐specific effectiveness (SE) 18,837.5 dB cm 2 g −1 an SE over 60 in ultra‐broadband frequency range achieved, comparable to best shields ever reported. Furthermore, wearable demonstrate photothermal antibacterial electrothermal deicing Thus, such high‐performance a facile manufacturing method have substantial application prospects flexible electronics, thermotherapy, compatibility, aerospace.

Язык: Английский

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MXene-Reinforced Liquid Metal/Polymer Fibers via Interface Engineering for Wearable Multifunctional Textiles

ACS Nano, Год журнала: 2022, Номер 16(9), С. 14490 - 14502

Опубликована: Сен. 12, 2022

Stretchable conductive fibers are an important component of wearable electronic textiles, but often suffer from a decrease in conductivity upon stretching. The use liquid metal (LM) droplets as fillers elastic is promising solution. However, there urgent need to develop effective strategies achieve high adhesion LM substrates and establish efficient electron transport paths between droplets. Here, we large-sized MXene two-dimensional materials modify magnetic prepare MXene/magnetic LM/poly(styrene-butadiene-styrene) composite (MLMS fibers). sheets decorated on the surface not only enhance droplet substrate also bridge adjacent paths. MLMS show several-fold improvements tensile strength elongation 30-fold increase compared with pure LM-filled fibers. These can be easily woven into multifunctional which exhibit strong electromagnetic interference shielding stable Joule heating performances even under large deformation. In addition, other advantages such gas/liquid permeability, chemical resistance (acid alkaline conditions), high/low-temperature tolerance (-40-150 °C) water washability, make them particularly suitable for applications.

Язык: Английский

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A Trimode Thermoregulatory Flexible Fibrous Membrane Designed with Hierarchical Core–Sheath Fiber Structure for Wearable Personal Thermal Management

ACS Nano, Год журнала: 2022, Номер 16(8), С. 12801 - 12812

Опубликована: Авг. 10, 2022

Advanced textiles designed for personal thermal management contribute to thermoregulation in an individual and energy-saving manner. Textiles incorporated with phase changing materials (PCMs) are capable of bridging the supply demand energy by absorbing releasing latent heat. The integration solar heating Joule function supplies multidriving resources, facilitates charging storage, expands service time application scenarios. Herein, we report a fibrous membrane-based textile that was developed designing hierarchical core–sheath fiber structure trimode management. Especially, coaxial electrospinning allows effective encapsulation PCMs, high heat enthalpy density (106.9 J/g), enabling membrane buffer drastic temperature changes clothing microclimate. favorable photothermal conversion performance renders saturated 70.5 °C (1 sun), benefiting from synergistic effect multiple light harvesters. Moreover, conductive coating endows composite admirable electrothermal performance, reaching 73.8 (4.2 V). flexible membranes integrated reversible change, multi-source-driven heating, storage present great advantages all-day, energy-saving, wearable applications.

Язык: Английский

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Temperature-Arousing Self-Powered Fire Warning E-Textile Based on p–n Segment Coaxial Aerogel Fibers for Active Fire Protection in Firefighting Clothing

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Окт. 13, 2023

Firefighting protective clothing is a crucial equipment for firefighters to minimize skin burn and ensure safety firefighting operation rescue mission. A recent increasing concern develop self-powered fire warning materials that can be incorporated into the achieve active protection before catches on fireground. However, it still challenge facilely design manufacture thermoelectric (TE) textile (TET)-based electronics with dynamic surface conformability breathability. Here, we an alternate coaxial wet-spinning strategy continuously produce alternating p/n-type TE aerogel fibers involving n-type Ti3C2Tx MXene p-type MXene/SWCNT-COOH as core materials, tough aramid nanofiber shell, which simultaneously flexibility high-efficiency power generation. With such fibers, TET-based sensors high mechanical stability wearability are successfully fabricated through stitching p-n segment fabric. The results indicate containing 50 pairs open-circuit voltage of 7.5 mV density 119.79 nW cm-2 at temperature difference 300 °C. output signal then calculated corresponding based linear relationship between temperature. alarm response time flame-retardant properties further displayed. Such true textiles offer breathability compatibility body movement, demonstrating their potential application in clothing.

Язык: Английский

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Slippery Graphene-Bridging Liquid Metal Layered Heterostructure Nanocomposite for Stable High-Performance Electromagnetic Interference Shielding

ACS Nano, Год журнала: 2023, Номер 17(13), С. 12616 - 12628

Опубликована: Июнь 29, 2023

Gallium-based liquid metal (LM) with intriguing high electrical conductivity and room-temperature fluidity has attracted substantial attention for its potential application in flexible electromagnetic interference (EMI) shielding. However, the EMI shielding performance of existing LM-based composites is unsatisfying due to irreconcilable contradiction between efficiency (SE) low thickness. In addition, research on environmentally stable material become an urgent need increasingly sophisticated scenarios. Herein, we prepared a reduced graphene oxide (rGO) bridging LM layered heterostructure nanocomposite liquid-infused slippery surface (S-rGO/LM), which exhibits ultrahigh X-band SE 80 dB at mere internal thickness 33 μm, extremely value 100 67 μm. More significantly, protected by ultrathin (2 μm) yet effective surface, S-rGO/LM film exceptional stability (EMI stays above 70 dB) after enduring various harsh conditions (harsh chemical environments, extreme operating temperatures, severe mechanical wearing). Moreover, also demonstrates satisfying photothermal behavior excellent Joule heating (surface temperature 179 °C 1.75 V, thermal response <10 s), endows it capability anti-icing/de-icing. This work proposes way construct reliable high-performance capability, shows great applications wearable devices, defense, aeronautics astronautics.

Язык: Английский

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Current advances and future perspectives of MXene-based electromagnetic interference shielding materials

Advanced Composites and Hybrid Materials, Год журнала: 2023, Номер 6(5)

Опубликована: Сен. 22, 2023

Язык: Английский

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Rheology-Guided Assembly of a Highly Aligned MXene/Cellulose Nanofiber Composite Film for High-Performance Electromagnetic Interference Shielding and Infrared Stealth

ACS Applied Materials & Interfaces, Год журнала: 2022, Номер 14(31), С. 36060 - 36070

Опубликована: Авг. 1, 2022

Delicately aligned structures of two-dimensional (2D) MXene nanosheets have demonstrated positive effects on applications, especially in electromagnetic interference (EMI) shielding and infrared (IR) stealth. However, precise regulation structural assembly by theory-guided solution processing is still a great challenge. Herein, one-dimensional (1D) cellulose nanofibers (CNFs) with high aspect ratio are applied as reinforcing agent rheological modifier for MXene/CNF colloids to fabricate MXene-based materials EMI IR Notably, systematical study the proposed determine optimal solution-processing conditions finely oriented component arrangement requirements provides in-depth information interactions between components. The delicately regulated orientation structure assembled shear inducement convincingly through micro-CT wide-angle X-ray diffraction/small-angle scattering (WAXD/SAXS), which endows film significantly enhanced electrical conductivity 46 685 S m-1, tensile strength 281.7 MPa, Young's modulus 14.8 GPa. Furthermore, highly ultrathin possesses enhancement effectiveness (50.2 dB) stealth (0.562 emissivity). These findings provide fruitful understanding optimized fabrication high-performance functional composite films open up opportunity development multifunctional materials.

Язык: Английский

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Enhanced Electromagnetic Shielding and Thermal Management Properties in MXene/Aramid Nanofiber Films Fabricated by Intermittent Filtration

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(3), С. 4516 - 4526

Опубликована: Янв. 13, 2023

High-efficiency electromagnetic interference (EMI) shielding and heat dissipation synergy materials with flexible, robust, environmental stability are urgently demanded in next-generation integration electronic devices. In this work, we report the lamellar MXene/Aramid nanofiber (ANF) composite films, which establish a nacre-like structure for EMI by using intermittent filtration strategy. The MXene/ANF film filled 50 wt % MXene demonstrates enhanced mechanical properties strength of 230.5 MPa, an elongation at break 6.2%, toughness 11.8 MJ·m3 (50 MXene). These remarkable attributed to hydrogen bonding highly oriented structure. Furthermore, due formation conductive network, shows outstanding conductivity 624.6 S/cm, effectiveness (EMI SE) 44.0 dB, superior specific SE value (SSE/t) 18847.6 dB·cm2/g, is better than vacuum film. Moreover, also great thermal 0.43 W/m·K. multifunctional films high-performance shielding, dissipation, joule heating show potential field aerospace, military, microelectronics, microcircuit, smart wearable electronics.

Язык: Английский

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Absorption-Dominant mmWave EMI Shielding Films with Ultralow Reflection using Ferromagnetic Resonance Frequency Tunable M-Type Ferrites

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Март 28, 2023

Although there is a high demand for absorption-dominant electromagnetic interference (EMI) shielding materials 5G millimeter-wave (mmWave) frequencies, most current are based on reflection-dominant conductive materials. While few proposed with magnetic materials, their working frequencies usually limited to under 30 GHz. In this study, novel multi-band EMI film M-type strontium ferrites and grid proposed. This shows ultralow reflection of less than 5% in multiple mmWave frequency bands sub-millimeter thicknesses, while more 99.9% EMI. The controllable by tuning the ferromagnetic resonance composite layer geometries. Two examples films one 39 52 GHz telecommunication other 60 77 autonomous radar bands, presented. remarkably low reflectance thinness provide an important advancement toward commercialization applications.

Язык: Английский

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