![4D Printing of a Sodium Alginate Hydrogel with Step-Wise Shape Deformation Based on Variation of Crosslinking Density | ACS Applied Polymer Materials 4D Printing of a Sodium Alginate Hydrogel with Step-Wise Shape Deformation Based on Variation of Crosslinking Density | ACS Applied Polymer Materials](https://pubs.acs.org/cms/10.1021/acsapm.1c01034/asset/images/large/ap1c01034_0003.jpeg)
4D Printing of a Sodium Alginate Hydrogel with Step-Wise Shape Deformation Based on Variation of Crosslinking Density | ACS Applied Polymer Materials
4D Printing of a Sodium Alginate Hydrogel with Step-Wise Shape Deformation Based on Variation of Crosslinking Density
![4D Printing of a Sodium Alginate Hydrogel with Step-Wise Shape Deformation Based on Variation of Crosslinking Density | ACS Applied Polymer Materials 4D Printing of a Sodium Alginate Hydrogel with Step-Wise Shape Deformation Based on Variation of Crosslinking Density | ACS Applied Polymer Materials](https://pubs.acs.org/cms/10.1021/acsapm.1c01034/asset/images/large/ap1c01034_0004.jpeg)