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11 June 2024 Controlling fluid flow direction using photothermal effects
Pantea Dara, Mahdi Shanei, Steven Jones, Mikael Käll
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Proceedings Volume PC12991, Nanophotonics X; PC129910F (2024) https://doi.org/10.1117/12.3016991
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
In microfluidic environments, particle transport is typically governed by slow diffusion near interfaces. However, by introducing localized fluid flow, it becomes feasible to actively transport suspended nano-objects within confined spaces. To achieve precise and dynamic control over fluid flow at the microscale, one promising approach is to leverage photothermal effects through the illumination of metallic or all-dielectric nanostructures. In this context, we explore the potential of manipulating the flow direction by adjusting the absorption characteristics of these metallic or dielectric nanostructures. By strategically designing the nanostructures and tailoring their absorption properties, we can exert precise control over the temperature distribution, thereby influencing the direction of fluid flow. This control over the flow direction opens up new possibilities for achieving desired transport capabilities within microfluidic systems.
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Pantea Dara, Mahdi Shanei, Steven Jones, and Mikael Käll "Controlling fluid flow direction using photothermal effects", Proc. SPIE PC12991, Nanophotonics X, PC129910F (11 June 2024); https://doi.org/10.1117/12.3016991
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KEYWORDS
Microfluidics
Photothermal effect
Fluid dynamics
Nanoantennas
Particles
Interfaces
Laser nanostructuring
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