Multi-gradient hydrogels produced layer by layer with capillary flow and crosslinking in open microchannels.
Piraino F, Camci-Unal G, Hancock MJ, Rasponi M, Khademhosseini A. Multi-gradient hydrogels produced layer by layer with capillary flow and crosslinking in open microchannels. Lab Chip. 2012 Feb 07; 12(3):659-61.