title: Monolithically integrated bacteriorhodopsin/semiconductor opto-electronic integrated circuit for a bio-photoreceiver.
abstract: The light-sensitive protein, bacteriorhodopsin (BR), is monolithically integrated with an InP-based amplifier circuit to realize a novel opto-electronic integrated circuit (OEIC) which performs as a high-speed photoreceiver. The circuit is realized by epitaxial growth of the field-effect transistors, currently used semiconductor device and circuit fabrication techniques, and selective area BR electro-deposition. The integrated photoreceiver has a responsivity of 175 V/W and linear photoresponse, with a dynamic range of 16 dB, with 594 nm photoexcitation. The dynamics of the photochemical cycle of BR has also been modeled and a proposed equivalent circuit simulates the measured BR photoresponse with good agreement.
authors.affiliation: Department of Electrical Engineering and Computer Science, Solid State Electronics Laboratory, University of Michigan, Ann Arbor, MI 48109-2122, USA.
authors.forename: J
authors.initials: J
authors.lastname: Xu
authors.forename: P
authors.initials: P
authors.lastname: Bhattacharya
authors.forename: G
authors.initials: G
authors.lastname: Váró
mesh_terms: D000669:Amplifiers, Electronic; D001436:Bacteriorhodopsins / Q000737:chemistry* / Q000528:radiation effects; D003198:Computer Simulation; D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods; D004581:Electronics; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008956:Models, Chemical; D010777:Photochemistry / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012666:Semiconductors; D012680:Sensitivity and Specificity; D014159:Transducers; D014173:Transistors, Electronic
chemical_list: D001436:Bacteriorhodopsins