Facile preparation of porous MXene/cellulose nanofiber composite for highly-sensitive flexible piezoresistive sensors in e-skin

Chemical Engineering Journal, Год журнала: 2025, Номер 505, С. 159369 - 159369

Опубликована: Янв. 7, 2025

Язык: Английский

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Highly stretchable and sensitive sensing composite yarn based on multidimensional structure modulation for wearable E-textiles

Applied Materials Today, Год журнала: 2025, Номер 42, С. 102591 - 102591

Опубликована: Янв. 11, 2025

Язык: Английский

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Bionic Recognition Technologies Inspired by Biological Mechanosensory Systems

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 21, 2025

Abstract Mechanical information is a medium for perceptual interaction and health monitoring of organisms or intelligent mechanical equipment, including force, vibration, sound, flow. Researchers are increasingly deploying recognition technologies (MIRT) that integrate acquisition, pre‐processing, processing functions expected to enable advanced applications. However, this also poses significant challenges acquisition performance efficiency. The novel exciting mechanosensory systems in nature have inspired us develop superior bionic (MIBRT) based on materials, structures, devices address these challenges. Herein, first strategies pre‐processing presented their importance high‐performance highlighted. Subsequently, design considerations sensors by mechanoreceptors described. Then, the concepts neuromorphic summarized order replicate biological nervous system. Additionally, ability MIBRT investigated recognize basic information. Furthermore, further potential applications robots, healthcare, virtual reality explored with view solve range complex tasks. Finally, future opportunities identified from multiple perspectives.

Язык: Английский

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High linearity and low hysteresis LMPs/MXene/AgNWs strain sensor for human motion detection

Applied Physics Letters, Год журнала: 2025, Номер 126(3)

Опубликована: Янв. 20, 2025

Resistive strain sensors show great potential in motion detection, medicine and healthcare, human–machine interaction owing to their ease of fabrication, simple structure, adjustable electrical performance. However, developing high-performance flexible resistive with high sensitivity, linearity, low hysteresis remains a challenge. In this work, we report an LMPs (liquid metal particles)/MXene/AgNWs sensor (LMA sensor) sensitivity (GF = 6.339), linearity (R2 0.982 24), (0.452%). process, AgNWs act as bridge between the MXene nanosheets, change contact area nanosheets under stretching endows sensitivity. The aggregated function structural framework, capitalizing on intrinsic fluidic characteristics serve adhesive silver nanowires (AgNWs) nanosheets. This approach effectively minimizes interstitial spaces MXene. formation Ti-O → Ga3+ coordination bonds has strengthened interfacial interactions. Consequently, demonstrates superior hysteresis. addition, sensitive layer buckled structure is obtained by stretch-release. inhibits inhomogeneous irreversible connection losses material, further improving sensor's mechanical durability. LMA can accurately detect various human activities such breathing expression detection. work will provide avenue for sensors.

Язык: Английский

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Super-elastic, hydrophobic composite aerogels for triboelectric nanogenerators

Nanoscale, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Progress toward the advancement of environmentally friendly energy harvesting devices is critical for eco-environmental protection.

Язык: Английский

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Hydrogen-Bonding-Crosslinked Polyzwitterionic Hydrogels with Extreme Stretchability, Ultralow Hysteresis, Self-adhesion, and Antifreezing Performance as Flexible Self-powered Electronic Devices

Transactions of Tianjin University, Год журнала: 2025, Номер unknown

Опубликована: Янв. 6, 2025

Abstract Flexible strain sensors have received tremendous attention because of their potential applications as wearable sensing devices. However, the integration key functions into a single sensor, such high stretchability, low hysteresis, self-adhesion, and excellent antifreezing performance, remains an unmet challenge. In this respect, zwitterionic hydrogels emerged ideal material candidates for breaking through above dilemma. The mechanical properties most reported hydrogels, however, are relatively poor, significantly restricting use under load-bearing conditions. Traditional improvement approaches often involve complex preparation processes, making large-scale production challenging. Additionally, prepared with chemical crosslinkers typically fragile prone to irreversible deformation large strains, resulting in slow recovery structure function. To fundamentally enhance pure effective approach is regulation monomers targeted design strategy. This study employed novel monomer carboxybetaine urethane acrylate (CBUTA), which contained one group on its side chain. Through direct polymerization ultrahigh concentration solutions without adding any crosslinker, we successfully developed supramolecular enhanced properties, self-adhesive behavior, performance. Most importantly, resultant exhibited tensile strength toughness displayed ultralow hysteresis conditions up 1100%. outstanding performance was attributed unique liquid–liquid phase separation phenomenon induced by CBUTA aqueous solution, well polymer chain entanglement strong hydrogen bonds between groups chains. application high-performance triboelectric nanogenerators further explored. Overall, work provides promising strategy developing flexible self-powered electronic

Язык: Английский

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Hierarchical Crack Engineering-Enabled High-Linearity and Ultrasensitive Strain Sensors

ACS Sensors, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Growing imperative for intelligent transformation of electro-ionic actuators in soft robotics has necessitated self-perception accurately mapping their nonlinear dynamic responses. Despite the promise integrating crack-based strain sensors such a purpose, significant challenges remain controlling crack propagation to prevent induction through-cracks, resulting lower sensitivity, linearity, and poor detection limits. Herein, we propose hierarchical synergistic enhancement structure by incorporating conductive poly(pyrrole)-coated polystyrene nanospheres Ti3C2Tx MXene induce cross-long sensing cracks via point-to-plane contacts, along with silver nanowires positively engineering networked microcracks linearity tuning. The prepared microstrain sensor achieves high (GF = 152.4, R2 0.99) regulation within ∼6% range, ultralow limit 0.02%, ultrafast response/recovery time 31 ms/32 ms under 0.2%. Notably, state-of-the-art performance detecting minimal changes down one millionth, i.e., ∼1 microstrain, been demonstrated voiceprint recognition, while maintaining superior measurement capability long-term stability mechanical vibrations up 100 Hz response 5 ms. Moreover, introduction an adhesive cross-linking layer facilitates robust bonding between actuator structure, enabling real-time tracking actuation without structural interference resistance change resolution 0.01%, providing insights empowering integrated perception intelligence.

Язык: Английский

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Ink formulation of functional nanowires with hyperbranched stabilizers for versatile printing of flexible electronics

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Март 16, 2025

Functional nanowire ink formulations require elaborate control over their composition, rheological properties, and fluidic properties to optimize printing processes. They also harsh post-fabrication treatments maximize the performance of resulting printed flexible devices, making it challenging uniformly deposit nanowire-based architectures ensure device reproducibility scalability. Here, we propose a strategy for developing silver (AgNW) formulations, where hyperbranched molecules (HPMs) are employed as both dispersant stabilizer nanowires. The three-dimensional architecture with functional groups on periphery HPMs enables preparation thixotropic HPMs-AgNW inks solid contents up 20 wt.% in aqueous organic solvents using low amount (AgNW weight ratio = 1:0.001). can be into patterns resolution μm various substrates without needing post-treatments. We obtain bar-coated transparent electrodes (sheet resistance 17.1 Ω sq−1 at 94.7% transmittance), slot-die-coated conductive patterns, screen-printed lines (conductivity exceeding 6.2 × 104 S cm−1), 3D stretchable wires. Importantly, this HPMs-stabilized formulation is general nanowires, enabling integration diverse set wearable electronic systems. Depositing electronics based nanowires reproducibly challenge. authors demonstrate suspensions that enable scalable fabrication different technologies.

Язык: Английский

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Crack propagation controlling via sliding cyclodextrin for high-density sensor array

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161769 - 161769

Опубликована: Март 1, 2025

Язык: Английский

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Full-Range, High-Sensitivity, linear aerogel pressure sensor with Epidermal-Inspired mechanoreception networks

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161886 - 161886

Опубликована: Март 1, 2025

Язык: Английский

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