The resulting structure looks like a Pac-Man maze, with little dots of PEGDA droplets surrounded by PDMS. Once the PEGDA diffuses out of the droplets, it chemically softens the PDMS, making the ...

The woodpile structure was imaged under reflective mode in a Nikon confocal microscope, ... (PEGda) has been widely used in TPP fabrication owing to its high biocompatibility.