Media 3: Rotational elastic micro joint based on helix-augmented cross-spring design for large angular movement Cheol Woo Ha Dong-Yol Yang 10.1364/OE.22.020789.m003 https://opticapublishing.figshare.com/articles/media/Media_3_Rotational_elastic_micro_joint_based_on_helix-augmented_cross-spring_design_for_large_angular_movement/4947251 Originally published in Optics Express on 25 August 2014 (oe-22-17-20789) 2014-08-25 00:00:00 Rotational media oe Optics Express helix-augmented cross-spring design 25 August 2014 movement