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  4. Study of fluid dynamics at the boundary wall of a microchannel by Bloch surface waves
 
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2019
Journal Article
Title

Study of fluid dynamics at the boundary wall of a microchannel by Bloch surface waves

Abstract
Understanding how a fluid flows at the boundaries when it is confined at the microscale/nanoscale is crucial for a broad range of engineering and biology applications. We propose an experimental technique based on Bloch surface waves sustained by a one-dimensional photonic crystal to evaluate the speed of the contact line, i.e., the triple junction separating three phases, in the low Reynold's number regime, and with a nanometric resolution. Here, we report on the experimental characterization of the translatory motion of the contact line that separates two water solutions with a relatively high refractive index mismatch (7.35×10−3) and its slipping over a solid surface. The advantages are the relative simplicity and economy of the experimental configuration.
Author(s)
Occhicone, Agostino
Sapienza Università di Roma
Sinibaldi, Alberto
Sapienza Università di Roma
Sonntag, Frank  orcid-logo
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Munzert, Peter  
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
Danz, Norbert  
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
Michelotti, Francesco
Sapienza Università di Roma
Journal
Optics Letters  
Project(s)
BILOBA  
Funder
European Commission EC  
DOI
10.1364/OL.44.001932
Additional full text version
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Language
English
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
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