Resin composition and flow cells incorporating the same

A flow cell, comprising:

• a substrate;
• and
• a cured, patterned resin on the substrate, the cured, patterned resin including depressions separated by interstitial regions, and the cured, patterned resin having been formed from a resin composition including:
• an epoxy resin matrix comprising an epoxy material selected from the group consisting of tetrakis(epoxycyclohexyl ethyl)tetramethyl cyclotetrasiloxane;
• a copolymer of (epoxycyclohexylethyl)methylsiloxane and dimethylsiloxane;
• 1,3-bis[2-(3,4-epoxycyclohexyl) ethyl] tetramethyl disiloxane;
• 1,3-bis(glycidoxypropyl)tetramethyl disiloxane;
• and combinations thereof;
• a free radical photoinitiator selected from the group consisting of 2-ethyl-9,10-dimethoxyanthracene, 2,2-dimethoxy-2-phenylacetophenone, 2-ethoxy-2-phenylacetophenone, and a phosphine oxide;
• a photoacid generator;
• a polyacrylate;
• and
• a solvent selected from the group consisting of propylene glycol monomethyl ether acetate (PGMEA), toluene, dimethyl sulfoxide (DMSO), and tetrahydrofuran (THF).