We report on the practical implementation of an angularly resolved ellipsometric optical sensing scheme based on Bloch surface waves sustained by tantala/titania/silica multilayers. The angular resolution is obtained by a focused illumination at fixed wavelength and detecting the angular reflectance spectrum by means of a CMOS array detector. The experimental results, obtained by using one tantala/titania/silica/multilayer defined structure, show the limit of detection below 6.5*10-7 RIU/Hz1/2. The physical characterization of the biosensors and their practical use with biological protocols is reported.
Phase-sentitive bloch surface wave biosensors / Sinibaldi, A.; Anopchenko, A.; Rizzo, R.; Michelotti, F.; Danz, N.; Munzert, P.; Rivolo, P.; Ricciardi, S.; Frascella, F.. - ELETTRONICO. - (2015). (Intervento presentato al convegno AISEM Annual Conference, 2015 XVIII tenutosi a Trento; Italy) [10.1109/AISEM.2015.7066790].
Phase-sentitive bloch surface wave biosensors
Sinibaldi, A.;Anopchenko, A.;Michelotti, F.;
2015
Abstract
We report on the practical implementation of an angularly resolved ellipsometric optical sensing scheme based on Bloch surface waves sustained by tantala/titania/silica multilayers. The angular resolution is obtained by a focused illumination at fixed wavelength and detecting the angular reflectance spectrum by means of a CMOS array detector. The experimental results, obtained by using one tantala/titania/silica/multilayer defined structure, show the limit of detection below 6.5*10-7 RIU/Hz1/2. The physical characterization of the biosensors and their practical use with biological protocols is reported.| File | Dimensione | Formato | |
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