@article {606998,
	title = {Stimuli-induced bi-directional hydrogel unimorph actuators},
	journal = {Extreme Mechanics Letters},
	volume = {21},
	year = {2018},
	pages = {35-43},
	author = {Shanliangzi Liu and Elisa Boatti and Katia Bertoldi and Rebecca Kramer-Bottiglio}
}
