Multifunctional, Bioinspired, and Moisture Responsive Graphene Oxide/Tapioca Starch Nanocomposites

Actuators triggered by water evaporation have found potential applications in a wide range of emerging fields, including smart structures, power generators, artificial muscles, and soft robots. In addition to poor mechanical performance, conventional actuators raise major economic environmental concerns due their expensive complex synthesis processes with hazardous chemicals high ecological footprint. Herein, nacre-inspired moisture-responsive actuator is fabricated using graphene oxide (GO) tapioca starch (TS), water-soluble, low-cost, eco-friendly natural polymer. The resultant TS/GO nanocomposite film has excellent properties exhibits rapid autonomous locomotion under moisture attack. Moreover, the demonstrates bending speed ?60° s?1 lift load up ten times its own weight. Based on these features, novel detection alarm system control operating circuits assembled film. Furthermore, shows that it capable mimicking biological structures like flowers can undergo even for nonwater vapors isopropyl alcohol, ethanol, chloroform.