Nacre-inspired composite film with mechanical robustness for highly efficient actuator powered by humidity gradients

High-Performance Graphene Biocomposite Enabled by Fe3+ Coordination for Thermal Management

“…As shown in Figure g,h, a characteristic peak at 1600 cm –1 is present in the curve of the CNF/40% GN film, corresponding to the stretching vibrations of the CO bond in the carboxylic acid. After cross-linking with the Fe 3+ ions, the CO stretching band of the CNF/40% GN-Fe film redshifts to a lower wavenumber (1562 cm –1 ) and decreases in intensity, suggesting that the interaction has occurred. − XPS results further demonstrated Fe bonding in the CNF/GN-Fe biocomposite films (Figures i–l and S10). Figure i shows the survey spectra, where a new Fe 2p peak can be seen in the CNF-Fe and CNF/40% GN-Fe films compared to the CNF and CNF/40% GN films, in addition to the two characteristic peaks of C 1s (∼285 eV) and O 1s (∼533 eV), indicating the modification of the Fe 3+ ions.…”

Super-Deformed Asymmetric Actuators: Balance of Photothermal and Humidity Response Effects through Structural Regulation

“…They could form a sandwich structure after evaporating and self-assembling into a film . In this sandwich structure, sodium alginate as the soft part will expand the molecular chain after hygroscopicity, while GO as the hard part produces a super volume expansion effect. , In addition, GO has excellent photothermal conversion efficiency, which can convert infrared light into heat energy and transfer it to the PU/PDMS layer. The thermal expansion coefficients of polyurethane and PDMS are 180 × 10 –6 and 4 × 10 –4 K –1 , respectively.…”

Carboxymethyl cellulose-based materials as an alternative source for sustainable electrochemical devices: a review

“…Owing to the aforementioned advantages, the composite film actuator can be effectively built to fabricate smart materials like artificial muscle, human finger and moist electrical generator. 161 …”