Liquid metal/CNTs hydrogel-based transparent strain sensor for wireless health monitoring of aquatic animals

Ultra-robust, high-adhesive, self-healing, and photothermal zwitterionic hydrogels for multi-sensory applications and solar-driven evaporation

“…Finally, to demonstrate the advantages of our PSBMA-LM@PDA hydrogels in next-generation hydrogel devices, we compared our PSBMA-LM@PDA-5 hydrogel with previously reported representative hydrogels in terms of tensile strength, self-adhesion, self-healing, strain sensing, pressure sensing, temperature sensing, photothermal, and solar evaporation performance, substantiating that our PSBMA-LM@PDA-5 hydrogel exhibited overwhelmingly comprehensive features over other counterparts 4,19,23,25,78–87 (Table S4, ESI†).…”

“…Recently, liquid metals (LMs) have emerged as ideal flexible fillers for hydrogels, considering their fluidic nature, metallic conductivity, chemical stability, biocompatibility, and negligible toxicity. [18][19][20][21][22][23] As compared to traditional rigid nanofillers, soft LMs can isotropically deform along with hydrogels to release the internal stress concentrations caused by the mechanical mismatch at the polymer-filler interface. Small-sized LM nanoparticles (LMNPs) are especially desirable for developing LM-embedded hydrogels not only because of their easier incorporation into hydrogels but also for their attractive properties to endow the hydrogels with additional functionalities, including excellent photothermal conversion performance, stimuli-responsive coalescence, catalytic potential, and alloying capacity.…”

Robust hydrogel sensors for unsupervised learning enabled sign‐to‐verbal translation

“…The swelling ratio ( W s ) reveals the structural properties and cross‐linking density of the network and is calculated by Equation (1). 49,50 where W t and W 0 are the weights of the swollen hydrogel at a specific time and the weights of dry hydrogel, respectively. The W s displays a maximum number at 400 min, followed by leveling off (Figure S11).…”

Flexible coaxial composite fiber based on carbon nanotube and thermochromic particles for multifunctional sensor and wearable electronics

“…Flexible electronic devices are capable of human-machine interactions with soft and flexible human skin to monitor an individual's physical activity, [1][2][3][4][5] which is essential for applications such as health monitoring, [6][7][8][9] human motion detection [10][11][12] and human-machine interfaces. [13][14][15] To meet these application requirements, flexible electronic devices are required to be flexible, [16][17][18] stretchable [19][20][21] and compatible, [22][23][24] allowing them to stretch, bend and twist like skin when worn for extended periods of time. 25,26 Wearable sensors, an important classification of flexible electronic devices, offer an emerging form of portable electronics that have the potential to transform the storage, display and transmission of information in our everyday lives in the future.…”