Figure 1. Fabrication of hydrogel microgel arrays.

Schematic of the fabrication process showing the deposition of cell-laden pre-polymers (HA or GelMA) on functionalized glass slides (Epoxy or TMSPMA). The pre-polymer solution was crosslinking either though thiol-ene reaction (HA-PEG)) or through a UV-irradiation step (GelMA). UV-exposure time was 15 sec and two different HA crosslinker concentrations was used (1% and 0.5%) (Illustration made by Jeffrey Aarons).