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.
Full text not available from this repository. (Request a copy)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 × 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.
| Item Type: | Article |
|---|---|
| Additional Information: | Copyright of this article belongs to ACS. |
| Uncontrolled Keywords: | Functionalization,Peptides and proteins,Membranes |
| Subjects: | Q Science > QR Microbiology |
| Depositing User: | Dr. K.P.S.Sengar |
| Date Deposited: | 30 Jul 2020 13:43 |
| Last Modified: | 30 Jul 2020 13:43 |
| URI: | http://crdd.osdd.net/open/id/eprint/2593 |
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