Abstract
AbstractA signal‐enhanced biomemory device was developed by introducing cysteine‐modified azurin/gold nanoparticle (GNP) heterolayers. The proposed recombinant azurin/GNP heterolayers provided an enhanced electron transfer between recombinant azurin/GNP and the Au surface, which stored the charges in the fabricated heterolayer. The fabricated recombinant azurin/GNP heterolayers was investigated by atomic force microscopy (AFM) and surface plasmon resonance (SPR) spectroscopy. Cyclic voltammetry (CV) was performed to examine the current signal‐amplified electrochemical property. In this analysis, the recombinant azurin/GNP heterolayers produced current that was 5 times greater than the recombinant azurin monolayer. These redox potentials were then used to obtain the ‘write step’ and ‘erase step’. Using these parameters, the biomemory function of the device was verified by chronoamperometry (CA).
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