Monodisperse polyethylene glycol diacrylate hydrogel microsphere formation by oxygen-controlled photopolymerization in a microfluidic device

There is widespread interest in microfabricated PEG-based hydrogels as drug delivery and tissue scaffolding materials. A nitrogen micro-jacketed microfluidic device is presented for the the continuous on-chip photopolymerization of microscale PEGDA particles.