Contactless Conductivity Detection in Ceramic Technology for On-Chip Electrophoresis
نویسندگان
چکیده
A capacitively coupled contactless conductivity detector produced in Low Temperature Co-fired Ceramic (LTCC) technology for microchip capillary electrophoresis (CE) is reported in this work. Electrodes located outside the measurement channel are used to sense impedance variations caused by conductive ions. The application of LTCC in combination with contactless conductivity detection is very promising because of its high dielectric constant compared to glass or plastics. This enhances the coupling of the excitation signal into the microfluidic channel and thus results in increased detection sensitivities. Successful separations of three inorganic ions confirm the feasibility of LTCC as a material for on-chip CE when used with contactless conductivity detection.
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