title: An Electronic and Optically Controlled Bifunctional Transistor Based on a Bio−Nano Hybrid Complex
creator: Bakaraju, Vikram
creator: Prasad, E.Senthil
creator: Meena, Brijesh
creator: Chaturvedi, Harsh
subject: QR Microbiology
description: 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 × 106 cm–2. The hybrid structure shows a conductivity of 19 μS/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 μS/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.
publisher: American Chemical Society
date: 2020-04-20
type: Article
type: PeerReviewed
relation: https://pubs.acs.org/doi/pdf/10.1021/acsomega.9b03904
identifier:   Bakaraju, Vikram and Prasad, E.Senthil and Meena, Brijesh and Chaturvedi, Harsh  (2020) An Electronic and Optically Controlled Bifunctional Transistor Based on a Bio−Nano Hybrid Complex.  ACS Omega, 5 (17).  pp. 9702-9706.      
relation: http://crdd.osdd.net/open/2593/