Microfluidic device with compound structure

The development of microfluidic chip has become a growing research field. Accompanied by the new polymer materials, the preparation process and the function of the microfluidic chip is becoming diversification. In this paper we propose a novel method for preparing microfluidic amperometric detection chip using the printed circuit board (PCB). The chip is consists of three parts: the printed circuit board substrate with micro-strip electrodes, the polymethyl methacrylate (PMMA) with microchannels and the PDMS as assistant bonding layer. The electrode size can achieve micron level and the detection electrodes which were integrated on the PCB is not easy to fall off or broken. The microfluidic chip would be manufactured numerously while reduce costs by using the mature PCB production process.