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Test structures are proposed to characterize Thin-Film-Transistors in array that control a transparent electrode array platform, used for bio-chemical applications. The structures are post-processed electrodes that connect the source terminals of multiple TFTs. This characterization is essential to determine the limits, in terms of sensitivity and operation frequency in the case of impedance measurements...
We present the usage of an optically transparent Thin Film Transistor (TFT) electrode array to perform arbitrarily spatially confined electrical characterizations of a cell culture. These arrays are a mature technology commonly used in Liquid Crystal Displays, and manufacturable on a scale of up to square meters. Electrical characterization allows one to detect not only changes of concentration of...
The purpose of this article is to present first results of electrical detection of micro-beads, using impedance spectroscopy technique, with a wholly integrated device. The whole integration concerns as well the electronics as the micro-fluidic integration inside a LSI device, by post-processing. The results are first steps in the development of this wholly integrated device, intended to be for biological...
We present a novel electrical impedance sensor for measuring the resealing time of porated mammalian plasma membranes. Openings were generated by high speed cavitation bubbles using laser pulsing of metallic microdisks on transparent ITO electrodes. Real-time impedance measurements show that membrane resealing time and impedance recovery takes 1 to 2 minutes after laser pulsing. Our method can also...
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