Bioinspired gradient-structured wood interfaces achieving efficient ion diffusion to generate electricity from natural evaporation

Abstract

A bioinspired gradient-structured wood-based interfacial evaporative nanogenerator, that overcomes the slow ion diffusion that limits efficient energy harvesting.

The latest research progress of conductive hydrogels in the field of electrophysiological signal acquisition

“…However, conventional hydrogel monomers are usually not conductive and cannot respond to external stimuli, limiting their development in the field of electrophysiological signal acquisition. Conductive hydrogels with conductive properties can be prepared by adding materials such as conductive polymers, 22–24 conductive nanomaterials, 25,26 and free ions 27–29 to hydrogels, and adjusting the addition ratio of these materials and changing the hydrogel network to a gradient structure 30–33 can effectively regulate their conductivity. In addition, excellent mechanical properties, 34 anti-freezing properties, 35,36 self-adhesive properties, 37 and self-healing properties 38–40 can be achieved through the rational design of conductive hydrogels, which makes the conductive hydrogels have long-term stability and reusability, good adaptability in harsh environments, and accuracy of signal acquisition.…”