Nanoscale protein-based memory device composed of recombinant azurin

RETRACTED: Monolayers of pigment-protein complexes on a bare gold electrode: Orientation controlled deposition and comparison of electron transfer rate for two configurations

“…Such devices may incorporate redox-active proteins and enzymes, which in particular, have a natural propensity for interaction by exchanging their electrons (Akkilic et al, 2014;Willner et al, 2006). Recent applications of photosensitive enzymes and proteins, for example, have shown their potential in solar energy conversion (Das et al, 2004;Nguyen and Bruce, 2014), optical memories (Kim et al, 2010), optical bioswitches (Liljeroth, 2012), biosensors (Swainsbury et al, 2014), and biological actinometers . The scope of interfacing can be extended to three dimensions to enhance functional sensitivity and selectivity.…”

Signal Enhancement of Electrochemical Biomemory Device Composed of Recombinant Azurin/Gold Nanoparticle

“…20 mL of a 0.1 mg/mL of gold nanoparticle solution (20 mL) was then dipped into the recombinant azurin self-assembled substrate for 6 hrs. This process was conducted in a humidity chamber at 25 8C [19,25,26].…”

“…Biomemory function can be used to generate currents from biomolecules for the development of a molecular memory device. However, in nano-scaled fields, it is hard to detect the current signal from electron transfer between biomolecules and the substrate because the response current is too low [19]. Therefore, the aim of this study is developing methods to overcome this limitation at the bulk scale of biomemory device.…”

Characterization of biomaterials

“…Despite the outstanding spatial resolution of STM, publications about the use of STM in biomaterials characterization are few and only related to selective substrates such as gold [159,160] and carbon [161] because of practical obstacles. First and mainly, the samples for STM measurement should be conductive, but many biomaterials are organic or inorganic non-metallic materials which are insulating.…”