A biochip cartridge, wherein the biochip cartridge is a bottom substrate, the bottom substrate comprising a printed circuit board (PCB), the PCB comprising an electrowetting grid of electrodes forming a droplet path, each A bottom substrate comprising an array of sensing electrodes accessible to the droplet path, comprising a self-assembled monolayer and a capture probe; and an electrowetting grid and a plurality of interconnects from the sensing electrodes; A biochip cartridge comprising a top plate with a conductive surface parallel to and coupled to the bottom substrate to form a reaction chamber. In addition, a method for detecting a target nucleic acid, an apparatus for processing a fluid, and a fluid container are also disclosed.
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