Human Blood Cell Sensing with Platinum Black Electroplated Impedance Sensor
AC impedance sensing is an important method for biological cell analysis in flow cytometry. For micro impedance cell sensors, downsizing electrodes increases the double layer impedance of the metal-electrolyte interface, thus leaves no sensing zone in frequency domain and reduces the sensitivity significantly. We proposed using platinum black electroplated electrodes to solve the problem. In this paper, using this technique we demonstrated human blood cell sensing with high signal to noise ratio.
Additional Information© 2007 IEEE. Issue Date : 16-19 Jan. 2007. This work is supported by the National Space Biomedical Research Institute through NASA NCC 9-58. The authors would like to thank other members of the Caltech Micromachining Laboratory for their valuable assistance.