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Sensing mechanism of the developed biosensors predicated on the electrical percolation principle with (A) The biosensor’s SWCNT (black) and antibody (blue) network prior to the addition analyte and (B) the biosensor’s SWCNT-antibody network following the addition of analyte (red), leading to an increase in resistance. Gray SWCNTs are those that are no longer connected in a conductive SWCNT pathway due to the presence of analyte.
