A Multichannel Chemical Sensing Method Using Single Quartz Resonator and Micro Flow Channel

In this paper, the development of a multi chemical sensing method using a single quartz crystal resonator and micro flow channel has been reported. In the developed device, samples pass through two capacitors that are mounted as sensing parts in a microchannel with a time lag. Connecting the capacitors to the single quartz crystal resonator, one can obtain frequency change ΔF of the resonator as time lag signals depending on the relative permittivity of samples. The optimization of resonator diameter was also carried out in this paper. Using the proposed method, we can realize multi chemical sensing with a single resonator.