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.

Study of fluid dynamics at the boundary wall of a microchannel by Bloch surface waves / Occhicone, A.; Sinibaldi, A.; Sonntag, F.; Munzert, P.; Danz, N.; Michelotti, F.. - In: OPTICS LETTERS. - ISSN 0146-9592. - 44:8(2019), pp. 1932-1935. [10.1364/OL.44.001932]

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

Occhicone, A.;Sinibaldi, A.;Michelotti, F.
2019

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.
photonic crystals, Bloch surface waves, slipping
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Study of fluid dynamics at the boundary wall of a microchannel by Bloch surface waves / Occhicone, A.; Sinibaldi, A.; Sonntag, F.; Munzert, P.; Danz, N.; Michelotti, F.. - In: OPTICS LETTERS. - ISSN 0146-9592. - 44:8(2019), pp. 1932-1935. [10.1364/OL.44.001932]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1259801
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