@article{hu2012hydrogel, title = {Hydrogel microrobots actuated by optically generated vapour bubbles}, author = {Hu, Wenqi and Ishii, Kelly S and Fan, Qihui and Ohta, Aaron T}, journal = {Lab on a Chip}, volume = {12}, number = {19}, pages = {3821--3826}, publisher = {Royal Society of Chemistry}, year = {2012}, doi = {} }