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This paper presents a hybrid bacteria and microparticles detection platform based on a CMOS technology. Vertical face to face microelectrode arrays are implemented onto CMOS chips by connecting the metal and via layers together. A CMOS post-processing procedure based on Deep Reactive Ion Etching (DRIE) is used to release the microelectrodes and to construct microchannels in between. With medium flow...
A technique is required to detect capacitance variation on an integrated circuit I/O using only digital ASIC cells. A ring oscillator based design is investigated to make use of the well known property that its period varies linearly with capacitance. It is shown that a loaded ring oscillator does not behave as expected in some situations. Conditions for linear behavior are established. It is shown...
This paper presents a novel technique for bacteria detection. The proposed system uses MC-1 magnetotactic bacteria and measures impedance to detect the presence of pathogenic bacteria. An electrode array is connected to respective cells that are fully integrated for impedance detection. The simulated performance shows that the circuit that was designed is robust. It can detect impedances ranging from...
An integrated biosensor for the detection of micron-size biological entities using magnetotactic bacteria (MTB) being guided under the control of an external magnetic field of a few Gauss is briefly described. The proposed biosensor will be implemented onto a silicon substrate compatible with standard CMOS technologies. To validate the proposed concept, a microfluidic device and a microelectronic...
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