Multifunctional superhydrophobic platform for control of water microdroplets by non-uniform electrostatic field

Georgii P. Pavliuk; Alexey Y. Zhizhchenko; Oleg B. Vitrik

doi:10.1117/12.2688859

28 November 2023 Multifunctional superhydrophobic platform for control of water microdroplets by non-uniform electrostatic field

Georgii P. Pavliuk, Alexey Y. Zhizhchenko, Oleg B. Vitrik

Author Affiliations +

Proceedings Volume 12773, Nanophotonics and Micro/Nano Optics IX; 127730K (2023) https://doi.org/10.1117/12.2688859
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

At the moment, manipulation of liquid microdroplets is required in various microfluidic and lab-on-a-chip devices, as well as advanced sensors. We report a new method for microdroplets manipulation, based on the use non-uniform electrostatic fields. Our platform uses an electrode array embedded in a dielectric planar superhydrophobic substrate produced by direct laser writing. When a voltage is applied to a certain sequence of electrodes, a non-uniform electrostatic field is produced, which acts to attract a droplet on the substrate to the electrodes. This achieves a stepwise movement of the droplet. We realized non-contact, selective and high-speed movement of the individual droplets along specified trajectories and their selective coalescence. In our opinion, this approach has a huge potential for chemical technology applications especially in optical sensors.

Citation Download Citation

Georgii P. Pavliuk, Alexey Y. Zhizhchenko, and Oleg B. Vitrik "Multifunctional superhydrophobic platform for control of water microdroplets by non-uniform electrostatic field", Proc. SPIE 12773, Nanophotonics and Micro/Nano Optics IX, 127730K (28 November 2023); https://doi.org/10.1117/12.2688859

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