We show that a multifunctional nanofluidic diode, based on a single pH-sensitive polymeric pore, can be used for different information processing tasks. This fact should permit a significant simplification of the logic circuitry in physico-chemical processors. The inputs are the pH values in the external solutions and the applied potential difference (voltage). The output is the electrical pore conductance. As a proof of concept, different logic and arithmetic computational functions are demonstrated.
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