Abstract
High-performance biosensors are the key elements for rapid and real-time detection of specific biomolecules. Herein, an ultrasensitive FET biosensor on a flexible polymer substrate was reported, and the aerosol jet printing (AJP) method offers a unique way for low-cost mass manufacturing of the flexible sensors. The stable PBA functionalized rGO layer and the goat-anti-rabbit IgG layer on the rGO were both printed by AJP method between the source/drain electrodes. The flexibe biosensors exposure to low concentrations of target rabbit IgG showed dramatic increase in the source-drain current, which exhibited great sensing performance with the lowest detection limit of 13 fM.
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