Continuous-flow ATP amplification system on a chip

In this study, we constructed a novel microfluidic device for continuous-flow ATP amplification, using the SU-8:PDMS method. Sepharose beads immobilized with adenylate kinase and pyruvate kinase was packed into a microfluidic chamber to form lamination layer. Dry film type SU-8 was suitable to form a very thick mold for beads column reactor and its dam structure. A good correlation between amplified luminescence and initial ATP concentration was observed in this system. The gradient of amplification when performing six cycles of continuous-flow ATP amplification was 1.72N.