Wearable Textiles Research Articles

Hybrid Piezo-Capacitive Multimodal Sensors Based on Polyurethane–Poly(vinylidene fluoride) Nanofibers for Wearable E-Textiles

Wearable textiles with integrated multimodal sensors have numerous uses in the healthcare, entertainment, fitness, and fashion industries. However, the majority of reported sensors use different measurement methods to measure different stimuli, i.e., strain, pressure, and temperature. Further, they lack repeatability and stretchability for multimodal sensing. We have solved these issues by fabricating hybrid piezoelectric-capacitive sensors based on the PVDF–PU blend. Though PVDF, being a piezoelectric polymer, can be used as a dielectric layer in a capacitive sensor, it shows a poor piezoelectric coefficient and is mechanically unstable to cyclic deformations. To overcome this problem, we have used a specific blend of PU with PVDF, which has both high stretchability and piezoelectric coefficient. PVDF79PU21 (with 21% PU) nanofiber capacitive sensors showed a multimodal response with an excellent sensitivity of 0.3 kPa–1 for up to 8 kPa pressure stimuli, a good gauge factor ranging between 0.5 and 0.75 for 0–40% cyclic strain, and high sensitivities of 0.8 and 2% °C–1 for 30–60 and 60–100 °C, respectively. They could be used for measuring the human body temperature in the range of 37–40 °C with a sensitivity of 0.9% °C–1. The prototypes of PVDF79PU21 nanofiber-based capacitive sensors were attached to different body parts to measure extension and flexion movements with high sensitivity, which showed its great potential as a wearable sensor.

Novel Lignin Hydrogel Sensors with Antiswelling, Antifreezing, and Anticreep Properties

Hydrogel shows great potential as a flexible wearable electronic device. However, the practical application of hydrogel is still significantly limited due to the poor functional stability caused by swelling behavior, non-frost resistance caused by high water content, and obvious creep behavior under repeated external force. In this work, macromolecular lignin with a three-dimensional network structure, and active functional groups are introduced into the hydrogel through the esterification grafting reaction of methacryloyl chloride. The introduction of lignin effectively improves the antiswelling, antifreezing, and creep resistance of the hydrogel sensor, while maintaining the mechanical properties (elongation at break > 350%, tensile strength > 1.5 MPa) and electrical conductivity (10 S/m). Under extreme environments, the toughness, tensile strength, and elongation at break of the hydrogel remain at more than 96%. Furthermore, the antifreezing, creep resistance, and conductivity of hydrogel sensors are not significantly affected after immersion in water for a long time (72 h). This work proposes a simple strategy to improve the antiswelling, antifreezing, and anticreep properties of hydrogels, which has guiding significance for the preparation of high-performance flexible wearable electronic materials.

Reducing Lumbar Flexion in a Repetitive Lifting Task: Comparison of Leukotape and Kinesio Tape and Their Effect on Lumbar Proprioception

Rigid leukotape applied to the skin of the trunk dorsum, superficial to the lumbar paraspinals, has been shown to reduce lumbar flexion in repetitive lifting, with the potential to reduce the risk of injury in jobs requiring the handling of material. It is unclear which mechanism underpins this reduction, and whether a tape with more elastic properties (i.e., kinesio tape) can yield similar results. In this study, twelve participants were randomly allocated into two groups, and practiced a repetitive lifting task with either leukotape or kinesio tape applied to the skin of their trunk dorsum. The participants also performed a sagittal plane repositioning task to assess changes in lumbar proprioception. The results showed a small reduction in lumbar flexion in the kinesio tape group and a moderate reduction in the leukotape group, and suggested a reduction in repositioning errors in the kinesio tape group only. We suggest that leukotape may correct the movement and improve performance during a flexion-based task, while kinesio tape may improve lumbar proprioception and promote learning. These results have implications for the choice and use of wearable textiles aiming to reduce injury risks in the manual handling industry.

Barbican-inspired bimetallic core–shell nanoparticles for fabricating natural leather-based radiation protective materials with enhanced X-ray shielding capability

With the wide application of X-rays, the development of flexible and efficient radiation protective materials to reduce the hazards of radiation is in great demand. Inspired by the Barbican defense system, the bimetallic nanocomposites were designed and assembled to trap X-rays photons to experience ordered and cyclic attenuation behavior, where two high-atomic-number elements with different absorption edges, Bismuth (Bi) and Tin (Sn), are assembled into a core–shell nanostructure (Bi@Sn) and were then evenly dispersed into natural leather (NL) to fabricated a high-efficiency wearable radiation protective material (Bi@Sn/NL). Benefiting from the well-defined Barbican-effect mechanism of the core–shell nanostructure, Bi@Sn nanoparticle features more efficient X-ray shielding capability than Bi+Sn nanoparticles mixtures which directly mixed Bi and Sn, and a 2.0 mm-thick Bi2.31@Sn2.43/NL could achieve a comparable attenuation efficiency to a 0.25 mm lead plate and averagely exceeded ∼10.4% than Bi2.31+Sn2.43/NL. Furthermore, Bi2.31@Sn2.43/NL also displays superior physiomechanical properties to the requirements of the Chinese National Standard and features an ultralow density of 1.2876 g cm−3. This work is expected to provide a promising strategy for the design and development of lightweight and high-efficiency wearable radiation protective materials.

Advanced TPU/ZnS:Al Flexible Film with Thermo-Force-Optical Response for Smart Clothing

With the continuous development of science and technology, smart sensing wearables have gradually entered people’s lives. However, the prepared wearable material has poor air permeability, poor fit, and does not have multiple modal excitations. In addition, it is not waterproof or even wearable at low temperatures. In this work, a thermoplastic polyurethane (TPU) and ZnS:Al composite film with excellent air permeability has been developed. The TPU/ZnS:Al flexible film can be prepared on a large scale by solution blow spinning (SBS). This fiber membrane can realize the dual response of temperature and stress, and cooperate with the light sensor to realize the transmission of intelligent information. This nanofiber membrane doped with ZnS:Al exhibits a uniform distribution, maintains excellent tensile properties and flexibility, and can adapt to any perfect shape of the fitting surface. Even the average air permeability can be as high as 300 mm s−1, which is 600 times that of conventional spraying methods. The Al introduced in ZnS:Al can stimulate the composite film to emit light, and the luminescence effect can be maintained for about 1 min. These results provide new ideas for the large-scale fabrication of integrated stimulus-responsive photosensitive intelligent wearable devices for various applications.

Flexible wearable fabrics for solar thermal energy storage and release in on-demand environments

Efficient solar thermal energy storage and release via molecular solar thermal (MOST) fuels is essential to meet the ever-increasing global energy demands. However, most reported MOSTs still face some challenges, such as energy storage relying on ultraviolet (UV) light and solvent, and applications limited to room temperature. Herein, we propose a novel flexible wearable fabric consisting of azobenzene-containing dendrimers, polydopamine, and cotton fabric, which not only can efficiently store photon of ultraviolet, green, red light and sunlight energy but also enables applications in low- or room-temperature solvent-free environments. These remarkable properties are attributed to the red-shift of the n-π* band of the σ-fluoroazobenzene, the low glass-transition temperature of dendrimer fuel, and the photothermal effect of polydopamine. The storage energy density of the wearable fabric can reach 0.05 MJ kg−1 (18.2 kJ mol−1) accompanied by a storage half-life of up to approximately one month. Blue light-triggered heat release from wearable fabrics can increase the temperature by 11.1–12.3 °C, showing excellent results in room-temperature wrist guards and low-temperature body-warming applications. This work paves the way for the development of wearable fabrics for solar thermal energy storage and release in on-demand environments such as sunlight, solvent-free, and low temperature.

High-performance smart cellulose nanohybrid aerogel fibers as a platform toward multifunctional textiles

Smart fibers capable of real-time multi-responses to external stimuli (e.g., thermal, electrical, mechanical, and humidity) and offering shielding from electromagnetic interference (EMI) as well as energy storage/conversion are essential units for wearable electronics and smart textiles. However, designing flexible and high-strength smart fibers with intelligent and integrative functions based on biomass resources is still a challenge. Herein, biodegradable, flexible, and high-strength (20.8 MPa) holocellulose nanofibrils/cellulose aerogel fibers (HCAFs) with high specific surface area (413 m2/g) and high porosity (85 %) are fabricated continuously and on large-scale via a nano-hybrid strategy and facile wet-spinning approach. The resulting smart textile woven with HCAFs exhibits excellent self-cleaning and thermal insulation performances over a wide temperature range. Furthermore, our fabricated holocellulose nanofibrils/carbon nanotubes/cellulose aerogel fiber (HCCAFs) textile shows outstanding thermal management and multifunctional sensing capabilities of human motions, temperature, humidity, and body fluid as well as EMI shielding performance. HCCAFs textile coupled with a thermoelectric generator can achieve highly efficient and reversible energy storage/conversion as well as solar-thermal-electrical power generation for power supply. The washing process has a negligible influence on mechanical properties, conductivity properties, and thermal insulation of the textile. These newly developed fibers represent very promising candidates for the next generation of wearable materials capable of multifunctional sensing, outstanding thermal insulation, high-quality thermal management, and power autonomy (e.g., in space suits).

Self‐Reinforced Hydrogel‐Based Skin‐Contactable Flexible Electronics for Multimodal Electrophysiological Signal Monitoring and Emergency Alarming System

AbstractInherently tissue‐like feature and multifunctional property of hydrogels make themself excellent materials for flexible electronics. However, conventional hydrogels with insufficient mechanical strength and poor fatigue resistance are damaged or lose service stability when subjected to alternating stress. Herein, self‐reinforced hydrogels are fabricated from elaborately designed ionic conductive hydrogels after repetitive sweat soak‐dehydration (SSD) treatment. The tensile strength of self‐reinforced hydrogels is improved to 930 from 480 kPa and exhibits insensitivity to crack propagation in any direction after 6 SSD treatment cycles. In addition, the self‐reinforced hydrogels show excellent skin friendliness compared with commercial wearable materials in a skin‐compatibility mouse model. Bringing together those advantages, various skin‐contactable flexible electronics are fabricated utilizing the self‐reinforced hydrogels and an emergency alarming system for acute myocardial infarction caused cardiogenic shock is also integrated that is expected to help potential patients in accidents.

Asymmetric-elastic-structure fabric-based triboelectric nanogenerators for wearable energy harvesting and human motion sensing

With rapid advancement in wearable electronics, triboelectric nanogenerators (TENGs) have attracted great attention for energy harvesting and bio-motion sensing because of low cost, environmentally friendly, safe, sustainable and easy availability. However, the existing structure is not well suitable and desirable for ordinary apparel. There are great challenges in balancing structural and motion adaptability with high-performance output for practical wearable applications. Therefore, herein we ingeniously combine human motions and the difference in elasticity between fabrics to develop an asymmetric-elastic-structure fabric-based triboelectric nanogenerator (AesF-TENG) which can realize rapid contact and separation under small deformation or force, and can efficiently harvest the mechanical energy under the natural motion of the human body to obtain better wearable potential. The AesF-TENG is composed of nylon and doped polydimethylsiloxane (PDMS) used as positive and negative triboelectric materials respectively, and stretchable elastic fabric and conventional cotton fabric as the base. The developed AesF-TENG can efficiently harvest biomechanical energy and maintain stable electrical performance after 20 washes and 120,000 durability tests and also drive commercial electronic watch, calculator and LEDs. Additionally, it could be also utilized as a self-powered wearable sensor for wireless monitoring of human body motions. The prominent output power performance of AesF-TENG together with human motion and textiles show their great potentials for viable applications in wearable electronics and smart textiles in the near future.

Lightweight and thermal insulation fabric-based composite foam for high-performance electromagnetic interference shielding

With the rapid development of electronic devices, electromagnetic interference (EMI) has posed serious threats to human health. Therefore, wearable materials with high EMI shielding performance are urgently required for protecting people from electromagnetic radiation. Herein, electroless plating and compression molding methods were utilized to fabricate sandwich structured composite foam. Aramid-carbon blend fabrics with Co–Ni coatings were selected as the surfaces, and the porous polyurethane (PU) foam doped with diverse content of carbon nanotubes (CNTs) served as the core lightweight layer. With the CNTs doping content of 3 wt%, a 3D conductive network is precisely constructed in the core foam with a tested 13.82 GPa tensile strength. Through a “reflection-absorption-reflection” triple-loss mechanism, the resulting composite foam possesses a favorable average EMI shielding effectiveness (SE) of 73.9 dB in the X band (8–12 GHz), which was far more than the requirement of 30 dB for common commercial EMI SE. In addition, the porous structure exhibits excellent thermal insulation properties within a wide range of temperature (0–150 °C) while presenting a low thermal conductivity of 0.0695 W/(m·K). Finally, the prepared composites were applied to the simulation scene of electromagnetic protection to explore its reliability and practicability as a wearable electromagnetic wave proof material. With the good combination of mechanical properties, thermal properties and excellent electromagnetic shielding properties, the prepared composites have a great application prospect in electromagnetic protective materials.

Some Metal Oxide-Natural Rubber Composites for Gamma- and Low-Energy X-Ray Radiation Shielding

This work studied protective material consisting of several metal oxide composites (Pb3O4, WO3, SnO2, and Bi2O3)-natural rubber (NR) for X-ray and gamma-ray shielding. The composites were prepared through open milling and vulcanization processes and further characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), rheometry analysis, and density gauge. The attenuation coefficient of the sample was investigated using X-ray generators with voltages ranging from 50 to 140 kV and gamma-ray energies ranging and 356 to 1250 keV, respectively. The experimental results show that the linear attenuation coefficient of NR filled with metal oxides was significantly improved compared to pure NR. For gamma-ray 661 keV, the HVL of NR decreased from 9.0 cm to between 4.4 - 6.2 cm after it was filled with metal oxides. The Bi2O3-NR is the best suitable material for gamma-ray attenuation, followed by Pb3O4-NR, WO3-NR, and SnO2-NR. Meanwhile, for x-rays, the HVL of NR decreased from 2.0 cm to between 0.17 -0.31 cm after it was filled with metal oxides. The proposed metal oxide-NR composites can be appropriate as a flexible protective material for manufacturing wearable radiation shielding products such as gloves, aprons, rubber underwear, and other wearable materials.

Research on monitoring the transfer of water vapors through textile materials using humidity sensors

The ability of textile materials to transfer water vapor greatly influences the protective and comfort functions of clothing. In order to appreciate the water vapor transfer capacity, standard methods have been defined, but these standardized methods have also some drawbacks. One of these drawbacks is the fact that the environmental conditions for determining the standard characteristics greatly differ from the real operating conditions, which are mostly dynamic. This paper proposes a method for dynamic monitoring of water vapor transfer through multilayer textile assemblies using relative humidity sensors. In addition, the method offers the possibility to determine the water vapor resistance of the textile materials with good accuracy and at a much lower price than using the standard ISO 11092 − 2014. These humidity sensors can be an important component of smart wearable electronic textiles and have potential applications in healthcare in the management of wounds, bed-wetting, and skin pathologies or for microclimate control in clothing for military, firemen, athletes, etc.

Temperature-controlled wearable heater of durably conductive cotton fabric prepared by composite coatings of silver/MXene and polydimethylsiloxane

Conductive and thermal cotton fabrics have a great potential in the field of wearable textiles, in particular, warm textiles. However, poor durability and low wearability have hindered the practical application of conductive and thermal cotton fabrics. In this study, a cotton fabric with excellent conductive and thermal properties was prepared by coating with silver nanoparticles (Ag NPs), MXene, and polydimethylsiloxane (PDMS). The Ag NPs and MXene coatings endowed the cotton fabric with excellent conductive and thermal properties, while the PDMS coating endowed the conductive and thermal fabric with mechanical and chemical durability. As a result, the surface resistance of the finished cotton fabric reached 23.4 ± 1.7 Ω/sq, exhibiting excellent conductive properties. In addition, the temperature of the cotton fabric was improved a short time (<96.0 s) after the application of a low voltage, and the temperature increase of the fabric could be controlled by adjusting the time. Moreover, the inherent properties of the finished cotton fabric were retained to a significant extent after the finishing process. Therefore, it is believed that the fabricated cotton fabric has great potential for application in conductive and warm textiles.

Graphene/SiC-coated textiles with excellent electromagnetic interference shielding, Joule heating, high-temperature resistance, and pressure-sensing performances

Multifunctional, wearable, and durable textiles integrated with smart electronics have attracted tremendous attention. However, it remains a great challenge to balance new functionalities with high temperature stability. Herein, textile-based pressure-sensors with excellent electromagnetic interference (EMI) shielding, Joule heating and high temperature resistance were fabricated by constructing graphene/SiC (G/SiC) heterostructures on carbon cloth via laser chemical vapor deposition (LCVD). The resultant textile exhibited excellent EMI efficiency of 74.2 dB with a thickness of 0.45 mm, Joule heating performance within low working voltage range of 1 to 3 V and fast response time within 20 s. These properties arose from multiple reflections, interfacial polarizations and high conductivity due to the numerous amounts of nanoscale G/SiC heterostructures. More importantly, the G/SiC/CFs demonstrated well high temperature resistance with a <em>T</em>_HRI of 380.16 ^oC owing to the protection of the coating layer on the carbon fibers upon oxidation. Meanwhile, the G/SiC/CFs presented good pressure-sensing performance with a high sensitivity of 52.93 kPa⁻¹, fast response time of 85 ms and wide pressure range up to 186 kPa. These features imply the potential of G/SiC/CFs as an efficient EMI shielding, electrical heater and piezoresistive sensor textiles.

Flexible Textile-Based Coaxial Transmission Lines for Wearable Applications

Flexible and lightweight textile-based coaxial transmission lines for wearable applications are presented. In particular, textile yarns defined by copper (Cu), polyester (PES), and polytetrafluoroehtylene (PTFE) materials were used to design transmission line prototypes offering a 50- <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\Omega$</tex-math></inline-formula> characteristic impedance. These structures, which have the weight and texture of a cylindrical shoe lace, were also simulated and measured using a commercial simulator and results are in agreement. In addition, the textile cables were also studied in various straight, bent and wet conditions to ensure flexibility and durability whilst observing low reflection and insertion losses in these scenarios. In addition, the mass and DC losses of the fabricated cables were measured and are competitive when compared to a commercially available cable. To the best knowledge of the authors, this is the first implementation of simple RF/microwave coaxial cables whilst achieving a 50- <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\Omega$</tex-math></inline-formula> characteristic impedance, made possible by using purely wearable yarns and materials, whilst adopting a textile braiding process during manufacturing. Findings suggest that the reported textile-based cables are suitable for data connectivity between wearable devices in the UHF and the 2.4 GHz ISM frequency bands, for example, and can provide an alternative to more established strategies for wireless connectivity between body worn IoT devices and other related technologies.

Copper-Coordinated Cellulose Fibers for Electric Devices with Motion Sensitivity and Flame Retardance.

Nanocomposite conductive fibers are of great significance in applications of wearable devices, smart textiles, and flexible electronics. Integration of conductive nanomaterials into flexible bio-based fibers with multifunctionality remains challenging due to interface failure, poor flexibility, and inflammability. Although having broader applications in textiles, regenerated cellulose fibers (RCFs) cannot meet the requirements of wearable electronics owing to their intrinsic insulation. In this study, we constructed conductive RCFs fabricated by coordinating copper ions with cellulose and reducing them into stable Cu nanoparticles coated on their surface. The Cu sheath offered excellent electrical conductivity (4.6 × 105 S m-1), electromagnetic interference shielding, and enhanced flame retardance. Inspired by plant tendrils, the conductive RCF was wrapped around an elastic rod to develop wearable sensors for human health and motion monitoring. The resultant fibers not only form stable conductive nanocomposites on the fiber surface by chemical bonds but also exhibit a huge potential for wearable devices, smart sensors, and flame-retardant circuits.

Facile "Synergistic Inner-Outer Activation" Strategy for Nano-Engineering of Nature-Skin-Derived Wearable Daytime Radiation Cooling Materials.

Natural skin-derived products, as traditional wearable materials are widely used in people's daily life due to the products' excellent origins. Herein, a versatile daytime-radiation cooling wearable natural skin (RC-skin) consisting of the collagen micro-nano fibers with the on-demand double-layer radiation cooling structure is nano-engineered through the proposed facile "synergistic inner-outer activation" strategy. The bottom layer (inner strategy) of the RC-skin is fabricated by filling the skin with the Mg11 (HPO3 )8 (OH)6 nanoparticles by soaking. The superstratum (outer strategy) is constituted by a composite coating with an irregular microporous structure. The RC-skin harvests the inherent advantages of natural building blocks including sufficient hydrophobicity, excellent mechanical properties, and friction resistance. Owing to the subtle double-layer structure design, the solar reflectance and the average emissivity in the mid-infrared band of RC-skin are ≈92.7% and ≈95%, respectively. Therefore, the RC-skin's temperature in the sub-ambient is reduced by ≈7.5°C. Various outdoor practical application experiments further substantiate that RC-skin has superior radiation cooling performances. Collectively, RC-skin has broad-application prospects for intelligent wearing, low-carbon travel, building materials, and intelligent thermoelectric power generation, and this study also provides novel strategies for developing natural-skin-derived functional materials.

Control of UV-Curing Ink Splashing and Line Quality during DC-Pulse-Modulated Electrohydrodynamic Printing for Textile-Based Electronics

The DC pulse-modulated electrohydrodynamic (EHD) printing technique enables one-step formability of electronic components of electronic textiles. However, the common fabrics as a kind of insulating substrate inevitably come into serious ink splashing behavior during printing, which will severely deteriorate the quality of printed patterns. To solve this problem, the reason for ink splashing on the polyester woven fabric was experimentally clarified, and then a facile solution, that is, the mature antistatic finishing technique in the textile industry, was used to dissipate residual charges emerging on insulating fabric substrates. The relationship between the ink splashing behavior and the electrostatic half-life of fabric was investigated. Also, the feasibility of antistatic finishing for overcoming ink splashing was evaluated. Results show that ink splashing is solved, and the standard deviation of line width is within 3% at a half-life of less than 0.2 s. Moreover, there is no significant effect of antistatic finishing on electrical resistance and adhesion performance of printed lines, and the finishing even with a dilution ratio of 1:100 did not disturb the port impedance of the printed antenna. This strategy is expected to promote the practice of the EHD printing technique in the large-scale and low-cost fabrication of wearable electronic textiles compatible with most of the common fabric substrates.

Temperature-Responsive Structurally Colored Fibers via Blend Electrospinning

Achieving fibers that change color with temperature may be promising for applications such as sensors and smart wearable textiles (woven and nonwoven). In this study, temperature-responsive cholesteryl ester liquid crystal formulations were blended with polycaprolactone or polystyrene using chloroform as a solvent for electrospinning to achieve thermochromic nonwoven products. Using polystyrene, beaded fibers were achieved and the thermochromic behavior was only observed under polarized light microscopy. To achieve fibers with visible thermochromic behavior observed by a video camera or smart phone, polycaprolactone was used as a carrier polymer. The comparison between polystyrene and polycaprolactone provides insight into polymer/solvent selection achieving responsive materials via blend processing. High loadings of liquid crystal were achieved with polycaprolactone, blends of 10 wt % polycaprolactone with 15 wt % liquid crystal formed fibers (fiber contained 60 wt % liquid crystal). Colored fibers could be achieved by varying the formulation of the liquid crystal. For example, liquid crystal formulations that were green at ambient conditions resulted in fibers that were green at ambient conditions (22 °C). Nonwoven fibers with dynamic color with temperature were also demonstrated. For example, liquid crystal formulations were colorless at ambient conditions and underwent a reversible color change from red to blue when heated and cooled between 32 and 37 °C. When incorporated into fibers, the fiber mats changed from white at ambient conditions to red at 32 °C to blue at 37 °C. The color change was reversible over multiple cycles.

Multifunctional double-network Ti3C2Tx MXene composite hydrogels for strain sensors with effective electromagnetic interference and UV shielding properties

The advent of hydrogel-based flexible strain sensors has generated enormous research interest due to their outstanding biocompatibility. However, developing hydrogel-based strain sensors with high gauge factor, wide detection range and multifunctional integration is still challenging. Here, a novel multifunctional hydrogel-based strain sensor is composed of two-dimensional transition metal carbides/nitrides (Ti3C2Tx MXene) and Polyacrylamide-co-Poly-N-hydroxyethylene acrylamide/Carboxy Methyl Cellulose-Fe3+ dual network structure (PAAm-PHEMAA/CMC-Fe3+) with multiple hydrogen bonds and coordination interactions. The dual network design endowed the hydrogel-based human motion sensor with fast rebound and high tensile properties, enabling it to exhibit high sensitivity (response time ∼120 ms and gauge factor ∼1.62), and a wide detection range (0–700%), including joint movements as well as more subtle human motions (facial micro-expression changes and speech). More importantly, the hydrogel-based strain sensor exhibited excellent EMI (41 dB, X-band) and UV shielding properties (365 nm, 100%, 0.5 mm) due to the synergy of porous structure, moderate conductivity, and ionic solution environment. Moreover, it demonstrated robust adhesion (29 kPa), high shape adaptability, and self-healing capability. This innovative multi-functional flexible sensor design provides guidance for the development, research and application of high-performance flexible wearable materials.