US 11,884,009 B2
3D nanofabrication based on hydrogel scaffolds
Shih-Chi Chen, Hong Kong (CN); Songyun Gu, Hong Kong (CN); Fei Han, Hong Kong (CN); Yongxin Zhao, Sewickley, PA (US); and Aleksandra Klimas, Pittsburgh, PA (US)
Assigned to The Chinese University of Hong Kong, Hong Kong (CN); and Carnegie Mellon University, Pittsburgh, PA (US)
Filed by The Chinese University of Hong Kong, Hong Kong (CN); and Carnegie Mellon University, Pittsburgh, PA (US)
Filed on May 10, 2021, as Appl. No. 17/302,671.
Claims priority of provisional application 63/114,174, filed on Nov. 16, 2020.
Prior Publication US 2022/0152924 A1, May 19, 2022
Int. Cl. B29C 64/188 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B29C 64/106 (2017.01); B33Y 70/00 (2020.01); B29C 64/35 (2017.01); B33Y 40/20 (2020.01); B29C 64/268 (2017.01); B29K 105/00 (2006.01); B29C 64/124 (2017.01); B33Y 40/00 (2020.01)
CPC B29C 64/188 (2017.08) [B29C 64/106 (2017.08); B29C 64/268 (2017.08); B29C 64/35 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/20 (2020.01); B33Y 70/00 (2014.12); B29C 64/124 (2017.08); B29K 2105/0061 (2013.01); B33Y 40/00 (2014.12)] 10 Claims
OG exemplary drawing
 
1. A method for hydrogel-based 3D fabrication, comprising:
patterning a hydrogel with a laser with a power density of 0.1 to 100 TW/cm2 by a photo-chemical modification of the hydrogel;
shrinking the hydrogel, then depositing and absorbing a material on the hydrogel, wherein the material is directly bonded to the hydrogel;
dehydrating the hydrogel to produce a three-dimensional structure.