Effects of Reabsorption due to Surface Concentration in Highly Resonant Photonic Crystal Fluorescence Biosensors. Sinibaldi, A., Fieramosca, A., Danz, N., Munzer, P., Occhicone, A., Barolo, C., & Michelotti, F. JOURNAL OF PHYSICAL CHEMISTRY C, 122(45):26281-26287, NOV 15, 2018.
doi  abstract   bibtex   
Photonic crystal enhanced fluorescence biosensors have been proposed as a novel immunodiagnostic tool, due to the increased fluorescence excitation rates and angular redistribution of the emission. Among these, purely dielectric one-dimensional photonic crystals (1DPC) sustaining Bloch surface waves (BSW) at their truncation edge have recently attracted much interest. We report for the first time on the time resolved experimental study of the effects of excess reabsorption of the BSW coupled fluorescence in the near-infrared range around 800 nm. Temporally and angularly resolved measurements of the BSW coupled fluorescence emission permit putting into evidence a strong reabsorption of the fluorescence emission when using highly resonant 1DPC. The results suggest that, when designing 1DPC sustaining BSW for quantitative diagnostic assays, it is necessary to choose a compromise quality factor, to exploit the features arising from the electromagnetic field enhancement while avoiding reabsorption.
@article{ ISI:000451101400061,
Author = {Sinibaldi, Alberto and Fieramosca, Antonio and Danz, Norbert and Munzer,
   Peter and Occhicone, Agostino and Barolo, Claudia and Michelotti,
   Francesco},
Title = {{Effects of Reabsorption due to Surface Concentration in Highly Resonant
   Photonic Crystal Fluorescence Biosensors}},
Journal = {{JOURNAL OF PHYSICAL CHEMISTRY C}},
Year = {{2018}},
Volume = {{122}},
Number = {{45}},
Pages = {{26281-26287}},
Month = {{NOV 15}},
Abstract = {{Photonic crystal enhanced fluorescence biosensors have been proposed as
   a novel immunodiagnostic tool, due to the increased fluorescence
   excitation rates and angular redistribution of the emission. Among
   these, purely dielectric one-dimensional photonic crystals (1DPC)
   sustaining Bloch surface waves (BSW) at their truncation edge have
   recently attracted much interest. We report for the first time on the
   time resolved experimental study of the effects of excess reabsorption
   of the BSW coupled fluorescence in the near-infrared range around 800
   nm. Temporally and angularly resolved measurements of the BSW coupled
   fluorescence emission permit putting into evidence a strong reabsorption
   of the fluorescence emission when using highly resonant 1DPC. The
   results suggest that, when designing 1DPC sustaining BSW for
   quantitative diagnostic assays, it is necessary to choose a compromise
   quality factor, to exploit the features arising from the electromagnetic
   field enhancement while avoiding reabsorption.}},
DOI = {{10.1021/acs.jpcc.8b09095}},
ISSN = {{1932-7447}},
ResearcherID-Numbers = {{Danz, Norbert/H-5049-2011
   Barolo, Claudia/B-7981-2014}},
ORCID-Numbers = {{Danz, Norbert/0000-0002-8927-9284
   Barolo, Claudia/0000-0003-0627-2579}},
Unique-ID = {{ISI:000451101400061}},
}

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