It is a challenge to manufacture pressure‐sensing materials that possess flexibility, high sensitivity, large‐area compliance, and capability detect both tiny large motions for the development of artificial intelligence products. Herein, very simple low‐cost approach proposed fabricate versatile pressure sensors based on microcrack‐designed carbon black (CB)@polyurethane (PU) sponges via natural polymer‐mediated water‐based layer‐by‐layer assembly. These are capable satisfying requirements...

Abstract Despite its widespread use in signal collection, flexible sensors have been rarely used human–machine interactions owing to indistinguishable signal, poor reliability, and stability when inflicted with unavoidable scratches and/or mechanical cuts. A highly sensitive self‐healing sensor enabled by multiple hydrogen bonding network nanostructured conductive is demonstrated. The supramolecular displays extremely fast (ca. 15 s) repeatable ability high healing efficiency (93 % after the...

The development of flexible and stretchable electronics has attracted intensive attention for their promising applications in next‐generation wearable functional devices. However, these devices that are made a conventional planar format have largely hindered development, especially highly conditions. Herein, novel type stretchable, fiber‐based triboelectric nanogenerator (fiber‐like TENG) power generation is developed. Owing to the advanced structural designs, including fiber‐convolving...

Ultra-robust nanomembranes possessing high mechanical strength combined with excellent stiffness and toughness rarely achieved in nanocomposite materials are presented. These fabricated by alternately depositing 1D cellulose nanocrystals 2D graphene oxide nanosheets using a spin assisted layer-by-layer assembly technique. Such unique combination of reinforcing nanostructures results layered nanomaterials.

Although conversion of low value but high-volume lignin by-product to its usable form is one the determinant factors for building an economically feasible integrated lignocellulose biorefinery, it has been challenged by structural complexity and inhomogeneity. We others have shown that uniform nanoparticles can be produced from a wide range technical lignins, despite varied lignocellulosic biomass pretreatment methods/conditions applied. This value-added nanostructure enriched with...

Abstract Ultrathin and high‐performance electromagnetic interference (EMI) shielding materials are urgently demanded for modern microelectronic devices. 2D metal carbides (MXenes) considered as a promising EMI material due to its metallic conductivity. In this study, sodium alginate is applied interlayer spacer Ti 3 C 2 T x nanosheets, which not only prevents the restacking of lamella structure but also serves building blocks sponge‐like structure. /calcium (CA) aerogel films with tens...

Strain sensors play an important role in the next generation of artificially intelligent products. However, it is difficult to achieve a good balance between desirable performance and easy-to-produce requirement strain sensors. In this work, we proposed simple, cost-efficient, large-area compliant strategy for fabricating highly sensitive sensor by coating polyurethane (PU) yarn with ultrathin, elastic, robust conductive polymer composite (CPC) layer consisting carbon black natural rubber....

Soft actuation materials are highly desirable in flexible electronics, soft robotics, etc. However, traditional bilayered actuators usually suffer from poor mechanical properties as well deteriorated performance reliability. Here, inspired by the delicate architecture of natural bamboo, we present a hierarchical gradient structured actuator via mesoscale assembly micro–nano-scaled two-dimentional MXenes and one-dimentional cellulose nanofibers with molecular-scaled strong hydrogen bonding....

For the first time, we demonstrated that compressed aerogels made from crosslinked native cellulose nano/micro-fibril (NFC/MFC) show a fast shape recovery property after being immersed in water. The degree other solvents was also measured by volume change of aerogels. It found strongly depends on solvent properties. water, more than 98% original recovered less 10 s. However, only about 18% its immersing aerogel ethanol, and no observed nonpolar solvent, such as toluene. NFC/MFC network is...

Aerogels from polyethylenimine-grafted cellulose nanofibrils (CNFs-PEI) were developed for the first time as a novel drug delivery system. The morphology and structure of CNFs before after chemical modification characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron (XPS). Water-soluble sodium salicylate (NaSA) was used model investigation loading release performance. CNFs-PEI aerogels exhibited high capability (287.39 mg/g),...

Ti₃C₂T_x/TOCNF composite papers present excellent mechanical strength and EMI shielding effectiveness due to their hierarchically aligned structure strong intermolecular interactions.

Abstract It is a challenge to manufacture flexible sensors that possess easily distinguishable biomotion signals, strong response reliability, and excellent self‐healing capability. Herein, sensor with tunable positive/negative piezoresistivity designed by the construction of hierarchical structure connected through supramolecular metal–ligand coordination bonds. The developed can be integrated human body detect multiple tiny such as pronunciation, coughing, deep breathing. Interestingly,...

Abstract Rapid progress in nanotechnology allows us to develop a large number of innovative wearables such as activity trackers, advanced textiles, and healthcare devices. However, manufacturing processes for desirable nanostructure are usually complex expensive. Moreover, materials used these devices mainly derived from nonrenewable resources. Therefore, it poses growing problems living environment, causes incompatible discomfort human beings with long‐time wearing. Here, self‐powered...

Cellulose aerogels with low density, high mechanical strength, and thermal conductivity are promising candidates for environmentally friendly heat insulating materials. The application of cellulose as insulators in building domestic appliances, however, is hampered by their highly flammable characteristics. In this work, flame retardant were fabricated from waste cotton fabrics situ synthesis magnesium hydroxide nanoparticles (MH NPs) gel nanostructures, followed freeze-drying. Our results...

Deposition of precious metal catalysts onto the surface various supporting materials to enhance stability and catalytic activity is highly desired. Although extensive studies have been focused on supported catalysts, their preparations are mainly based use reducing agents which not environmentally benign. Herein, we report a one-pot green synthesis gold nanoparticles (Au NPs) deposited cellulose nanocrystals (CNs) under hydrothermal conditions using CNs as agent stabilizing template. Our...

Highly flexible and foldable supercapacitor electrodes were fabricated by the layer-by-layer assembly of Ti₃C₂T_x(MXene) nanoflakes with carbon nanotubes on electrospun polymer fiber networks.

Uniaxially aligned cellulose nanofibers with well oriented nanocrystals (CNCs) embedded were fabricated via electrospinning using a rotating drum as the collector. Scanning electron microscope (SEM) images indicated that most uniaxially aligned. The incorporation of CNCs into spinning dope resulted in more uniform morphology electrospun cellulose/CNCs nanocomposite (ECCNN). Polarized light (PLM) and transmission (TEM) showed dispersed ECCNN nonwovens achieved considerable orientation along...

The development of modern electronics has raised great demand for multifunctional materials to protect electronic instruments against electromagnetic interference (EMI) radiation and ice accretion in cold weather. However, it is still a challenge prepare high-performance films with excellent flexibilty, mechanical strength, durability. Here, we propose layer-by-layer assembly cellulose nanofiber (CNF)/Ti3C2Tx nanocomposites (TM) on bacterial (BC) substrate via repeated spray coating. CNFs...

Progress toward the integration of electronic sensors with a signal processing system is important for artificial intelligent and smart robotics. It demands mechanically robust, highly sensitive, self-healable sensing materials which could generate discernible electric variations responding to external stimuli. Here, inspired by supramolecular interactions amino acid residues in proteins, we report nanostructured Ti3C2MXenes/rubber-based elastomer (NMSE) sensing. MXene nanoflakes modified...

Self-healing sensors with strong mechanical properties, high sensitivity to strains, and excellent mechanical/electrical self-healing ability.

A cephalopod-inspired mechanoluminescence material with skin-like self-healing and sensing properties was developed by the construction of a unique strain-dependent microcrack-structured conductive UV-shielding layer upon self-healable supramolecular fluorescent elastomer synergistic dynamic crosslinking network design.

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...