Zhao, Q.; Dunlop, J.W.C.; Qiu, X.; Huang, F.; Zhang, Z.; Heyda, J.; Dzubiella, J.; Antonietti, M.; Yuan, J.: An instant multi-responsive porous polymer actuator driven by solvent molecule sorption. Nature Communications 5 (2014), p. 4293/1-8
10.1038/ncomms5293