Hae-Ryung Lee, Jaesung Woo, Seok Hee Han, Seung-Min Lim, Sungsoo Lim, Yong-Woo Kang, Won Jun Song, Jae-Man Park, Taek Dong Chung, Young-Chang Joo, and Jeong-Yun Sun, “A Stretchable Ionic Diode from Copolyelectrolyte Hydrogels with Methacrylated Polysaccharides”, Advanced Functional Materials, 1806909 2018 DOI: 10.1002/adfm.201806909