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  4. Improving the sensitivity of optical biosensors by means of Bloch surface waves
 
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2012
Conference Paper
Title

Improving the sensitivity of optical biosensors by means of Bloch surface waves

Abstract
One factor limiting the performance of Surface Plasmon Resonance (SPR) biosensors is the width of the resonance that basically originates from metal absorption. In contrast, comparable sensing schemes based upon the concept of Bloch surface waves (BSW) have been proposed. As such sensors are prepared from dielectric materials only, losses as well as the resonance width decrease significantly in comparison to SPR. By preparing BSW stacks that feature a similar resonance position as Gold based SPR sensors, both approaches are compared directly using one detection system only. We obtain an increased performance of BSW although utilizing an optical system optimized for SPR analysis.
Author(s)
Danz, Norbert  
Sinibaldi, A.
Michelotti, F.
Descrovi, E.
Munzert, Peter  
Schulz, Ulrike  
Sonntag, F.
Mainwork
BMT 2012, Biomedizinische Technik. Proceedings 46. DGBMT Jahrestagung  
Conference
Deutsche Gesellschaft für Biomedizinische Technik (DGBMT Jahrestagung) 2012  
DOI
10.1515/bmt-2012-4246
Language
English
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
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