title: Integrated architecture for the electrical detection of plasmonic resonances based on high electron mobility photo-transistors.
abstract: We report the design of an integrated platform for on-chip electrical transduction of the surface plasmon resonance supported by a nanostructured metal grating. The latter is fabricated on the active area of a GaAs/AlGaAs photo-HEMT and simultaneously works as the electronic gate of the device. The gold plasmonic crystal has a V-groove profile and has been designed by numerical optical simulations. By showing that the numerical models accurately reproduce the phototransistors experimental response, we demonstrate that the proposed architecture is suitable for the development of a new class of compact and scalable SPR sensors.
authors.affiliation: Laboratory for Nanofabrication of Nanodevices, LaNN - Veneto Nanotech, Corso Stati Uniti 4, 35127 Padova, Italy. davide.sammito@venetonanotech.it.
authors.forename: Davide
authors.initials: D
authors.lastname: Sammito
authors.forename: Davide
authors.initials: D
authors.lastname: De Salvador
authors.forename: Pierfrancesco
authors.initials: P
authors.lastname: Zilio
authors.forename: Giorgio
authors.initials: G
authors.lastname: Biasiol
authors.forename: Tommaso
authors.initials: T
authors.lastname: Ongarello
authors.forename: Michele
authors.initials: M
authors.lastname: Massari
authors.forename: Gianluca
authors.initials: G
authors.lastname: Ruffato
authors.forename: Margherita
authors.initials: M
authors.lastname: Morpurgo
authors.forename: Davide
authors.initials: D
authors.lastname: Silvestri
authors.forename: Gianluigi
authors.initials: G
authors.lastname: Maggioni
authors.forename: Gianluca
authors.initials: G
authors.lastname: Bovo
authors.forename: Michele
authors.initials: M
authors.lastname: Gaio
authors.forename: Filippo
authors.initials: F
authors.lastname: Romanato
mesh_terms: D000465:Algorithms; D016880:Anisotropy; D015374:Biosensing Techniques; D003198:Computer Simulation; D004563:Electrochemistry; D004583:Electrons; D004867:Equipment Design; D006046:Gold / Q000737:chemistry; D008670:Metals / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry; D036103:Nanotechnology / Q000295:instrumentation; D055095:Optics and Photonics; D010777:Photochemistry / Q000379:methods*; D012666:Semiconductors; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D014173:Transistors, Electronic
chemical_list: D008670:Metals; D006046:Gold