High-Q polymer resonators with spatially controlled photo-functionalization for biosensing applications

High-Q polymer resonators with spatially controlled photo-functionalization for biosensing applications

We demonstrate the applicability of polymeric whispering gallery mode resonators fabricated on silicon as biosensors. Optical measurements on the passive resonators in the visible spectral range yield Q-factors as high as 1.3×107. Local, covalent surface functionalization, is achieved by spatially c...

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Veröffentlicht in:Applied physics letters 2013-03, Vol.102 (12)
Hauptverfasser: Beck, Torsten, Mai, Martin, Grossmann, Tobias, Wienhold, Tobias, Hauser, Mario, Mappes, Timo, Kalt, Heinz
Format: Artikel
Sprache:eng
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Zusammenfassung:We demonstrate the applicability of polymeric whispering gallery mode resonators fabricated on silicon as biosensors. Optical measurements on the passive resonators in the visible spectral range yield Q-factors as high as 1.3×107. Local, covalent surface functionalization, is achieved by spatially controlled UV-exposure of a derivative of the photoreactive crosslinker benzophenone. Protein detection is shown using the specific binding of the biotin-streptavidin system.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4798533