title: Modulation of fluorescence signals from biomolecules along nanowires due to interaction of light with oriented nanostructures.
abstract: High aspect ratio nanostructures have gained increasing interest as highly sensitive platforms for biosensing. Here, well-defined biofunctionalized vertical indium arsenide nanowires are used to map the interaction of light with nanowires depending on their orientation and the excitation wavelength. We show how nanowires act as antennas modifying the light distribution and the emitted fluorescence. This work highlights an important optical phenomenon in quantitative fluorescence studies and constitutes an important step for future studies using such nanostructures.
authors.affiliation: Bio-Nanotechnology and Nanomedicine Laboratory, Department of Chemistry & Nano-Science Center, University of Copenhagen , Universitetsparken 5, DK-2100 Copenhagen, Denmark.
authors.forename: Rune S
authors.initials: RS
authors.lastname: Frederiksen
authors.forename: Esther
authors.initials: E
authors.lastname: Alarcon-Llado
authors.forename: Morten H
authors.initials: MH
authors.lastname: Madsen
authors.forename: Katrine R
authors.initials: KR
authors.lastname: Rostgaard
authors.forename: Peter
authors.initials: P
authors.lastname: Krogstrup
authors.forename: Tom
authors.initials: T
authors.lastname: Vosch
authors.forename: Jesper
authors.initials: J
authors.lastname: Nygård
authors.forename: Anna
authors.initials: A
authors.lastname: Fontcuberta I Morral
authors.forename: Karen L
authors.initials: KL
authors.lastname: Martinez
mesh_terms: D001152:Arsenicals / Q000737:chemistry*; D015374:Biosensing Techniques / Q000379:methods*; D005453:Fluorescence; D007204:Indium / Q000737:chemistry*; D008027:Light; D053770:Nanowires / Q000737:chemistry*
chemical_list: D001152:Arsenicals; D007204:Indium; C076773:indium arsenide
keywords: InAs; Meep simulation; biosensing; nanowire; optical properties; protein