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(a) Schematic of the proposed modified ISFET having an EG on a very thick insulator and (b) equivalent circuits for describing the operating principle of the proposed biosensor according to electrical characteristics.
(a) Fabricated EGs of the modified ISFET formed on glass and (b) a mounting module to measure the modified ISFETs, including EG on glass, PDMS reaction bath, and PCB for a commercial p-MOSFET and an external ceramic capacitor.
(a) SEM image of the surface on the EG after immobilization of protein G stabilized Au NPs and (b) the conductance change caused by interaction between mab-MA and microalbumin with time for the modified ISFET sensors.
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