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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Eur Polym J. 2015 Feb 28;72:386–412. doi: 10.1016/j.eurpolymj.2015.02.022

Figure 5. Photolithography methods for particle synthesis.

Figure 5

(A) Contact lithography: a photomask is placed in direct contact with monomer solution. (B) Flow lithography: photomask designs are projected onto streams inside microchannels. (C) Replica molding: features created using soft lithography are used to impart designs onto soft hydrogel particles.