We report on the use of an optical sensing platform based on Bloch surface waves sustained by one-dimensional photonic crystals as a novel optical tool to probe in real time the fluid flow at a boundarywall of a microfluidic channel under dynamic conditions. Understanding how fluid flow interacts withwall surfaces is crucial for a broad range of biological processes and engineering applications, such as sur-face wave biosensing. The proposed platform provides nanometric resolution with respect to the distancefrom the boundary wall sensor’s surface. Here, for the first time, we report on the experimental inves-tigation on the temporal evolution of the interface between two fluids with different refractive indicesunder convective and diffusive conditions. The temporal evolution of the fluids interface in proximity ofthe wall is recovered. From the data analysis, the diffusion coefficients of glucose and glycerol in waterare measured and found in good agreement with the literature. Tuning the one-dimensional photoniccrystals geometry and the Bloch surface wave’s dispersion has the potential to probe the fluid flow in anextremely wide range of distances from the microfluidic channel wall.

A novel technique based on Bloch surface waves sustained by one-dimensional photonic crystals to probe mass transport in a microfluidic channel / Occhicone, Agostino; Sinibaldi, Alberto; Sonntag, Frank; Munzert, Peter; Danz, Norbert; Michelotti, Francesco. - In: SENSORS AND ACTUATORS. B, CHEMICAL. - ISSN 0925-4005. - STAMPA. - 247:(2017), pp. 532-539. [10.1016/j.snb.2017.03.041]

A novel technique based on Bloch surface waves sustained by one-dimensional photonic crystals to probe mass transport in a microfluidic channel

OCCHICONE, AGOSTINO;SINIBALDI, ALBERTO;MICHELOTTI, Francesco
2017

Abstract

We report on the use of an optical sensing platform based on Bloch surface waves sustained by one-dimensional photonic crystals as a novel optical tool to probe in real time the fluid flow at a boundarywall of a microfluidic channel under dynamic conditions. Understanding how fluid flow interacts withwall surfaces is crucial for a broad range of biological processes and engineering applications, such as sur-face wave biosensing. The proposed platform provides nanometric resolution with respect to the distancefrom the boundary wall sensor’s surface. Here, for the first time, we report on the experimental inves-tigation on the temporal evolution of the interface between two fluids with different refractive indicesunder convective and diffusive conditions. The temporal evolution of the fluids interface in proximity ofthe wall is recovered. From the data analysis, the diffusion coefficients of glucose and glycerol in waterare measured and found in good agreement with the literature. Tuning the one-dimensional photoniccrystals geometry and the Bloch surface wave’s dispersion has the potential to probe the fluid flow in anextremely wide range of distances from the microfluidic channel wall.
Bloch surface waves; One-dimensional photonic crystals; Sensors; μ-fluidics; Electronic, Optical and Magnetic Materials; Instrumentation; Condensed Matter Physics; Surfaces, Coatings and Films; 2506; Materials Chemistry2506 Metals and Alloys; Electrical and Electronic Engineering
01 Pubblicazione su rivista::01a Articolo in rivista
A novel technique based on Bloch surface waves sustained by one-dimensional photonic crystals to probe mass transport in a microfluidic channel / Occhicone, Agostino; Sinibaldi, Alberto; Sonntag, Frank; Munzert, Peter; Danz, Norbert; Michelotti, Francesco. - In: SENSORS AND ACTUATORS. B, CHEMICAL. - ISSN 0925-4005. - STAMPA. - 247:(2017), pp. 532-539. [10.1016/j.snb.2017.03.041]
File allegati a questo prodotto
File Dimensione Formato  
Occhicone_preprint_Novel_2017.pdf

Open Access dal 19/03/2021

Tipologia: Documento in Pre-print (manoscritto inviato all'editore, precedente alla peer review)
Licenza: Creative commons
Dimensione 1.6 MB
Formato Adobe PDF
1.6 MB Adobe PDF Visualizza/Apri PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/966746
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 11
  • ???jsp.display-item.citation.isi??? 11
social impact