@article{open2593,
          volume = {5},
          number = {17},
           month = {April},
          author = {Vikram Bakaraju and E.Senthil Prasad and Brijesh Meena and Harsh Chaturvedi},
            note = {Copyright of this article belongs to ACS.},
           title = {An Electronic and Optically Controlled Bifunctional Transistor Based on a Bio?Nano Hybrid Complex},
       publisher = {American Chemical Society},
            year = {2020},
         journal = {ACS Omega},
           pages = {9702--9706},
        keywords = {Functionalization,Peptides and proteins,Membranes},
             url = {http://crdd.osdd.net/open/2593/},
        abstract = {We report an electronically and optically controlled bioelectronic field-effect transistor (FET) based on the hybrid film of photoactive bacteriorhodopsin and electronically conducting single-walled carbon nanotubes (SWNTs). Two-dimensional (2D) crystals of bacteriorhodopsin form the photoactive center of the bio?nano complex, whereas one-dimensional (1D) pure SWNTs provide the required electronic support. The redshift in the Raman spectra indicates the electronic doping with an estimated charge density of 3 {$\times$} 106 cm?2. The hybrid structure shows a conductivity of 19 {\ensuremath{\mu}}S/m and semiconducting characteristics due to preferential binding with selective diameters of semiconducting SWNTs. The bioelectronic transistor fabricated using direct laser lithography shows both optical and electronic gating with a significant on/off switch ratio of 8.5 and a photoconductivity of 13.15 {\ensuremath{\mu}}S/m. An n-type FET shows complementary p-type characteristics under light due to optically controlled, electronic doping by the ?proton-pumping? bacteriorhodopsin. The fabricated bioelectronic transistor exhibits both electronically and optically well-controlled bifunctionality based on the functionalized hybrid electronic material.}
}