A Microfluidic Conjugated-Polymer Sensor Chip


  • This work was supported by the KICOS (K20501000002-07- E0100-00210), Seoul R&BD Program (10919), and KOSEF (Center for Ultramicrochemical Process System).


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A new, microfluidic polydiacetylene (PDA) sensor system based on the hydrodynamic focusing principle is developed. Narrow fluorescent bands are observed when the focused stream of a PDA solution contacts the sheath flows of cyclodextrin (CD) receptor molecules (see figure). The system allows for continuous and rapid monitoring of molecular recognition events.