Abstract:

On the microfluidic chip,the detector is an important part,which will determine the limitation,speed,applying area and volume of the chip.For the need of biochemical chip,which consumes fewer specimens and should integrated with microfluidic chip,a kind of spectrophotometric analysis method is described in this paper.The fiber evanescent wave detection method is used in the experiments by visible light(460-800 nm).The experimental results proved that the evanescent wave detection method consumes few reagent and is easy to integrated on microchips.

Key words: Micro biochemical chip, Evanescent wave, USB fiber micro spectrometer