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The study of cellular function and response is essential for basic research and for applications in the fields of biomedicine and biotechnology. We have developed the first 256-pixel proton camera array for imaging the hydrogen ion activity of cells grown in vitro. The proton camera is an integrated sensor array technology, designed and fabricated in a standard commercial 0.35 mum complementary metal...
Over the past twenty-five years, silicon CMOS technology has firmly established itself as the dominant platform in the microelectronics industry. This has resulted in many recent initiatives to fabricate CMOS-based microelectrodes for the stimulation and recording of electrical activity of neurons. CMOS technology offers the potential for monolithic integration of sensors and electronics and it serves...
In this paper, we evaluate the impact of GaAs MOSFET technology on the design of CMOS combinational logic. A BSIM model is developed for both GaAs pMOS and nMOS transistors based on the underlying device physics, drift-diffusion simulations, and measured data. An elementary family of logic gates are implemented using these models and a set of optimal transistor sizing ratios are established. This...
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