Sprecher
Beschreibung
Liquid diodes are surface structures that enable the flow of liquids in one direction but prohibit flow in the reverse direction[1]. When these diodes are made from flexible materials, their structure can deform under external compressive forces, and, in return, their diodic nature can break. In a previous study by Sammartino et al.[2], it was demonstrated that reverse flow in liquid diodes can be activated, depending on the velocity of compression. The reverse flow occurs due to the formation of a convex meniscus at the opening of the diode. When the liquid front reaches a counter surface at the diode, it forms a capillary bridge that enables reverse flow.
The objective of my research is to deepen our understanding of the mechanisms governing this reverse flow by examining the factors that influence the formation of a transient convex meniscus, including geometric configurations and compression dynamics. In practice, the length of the channel leading into the diode. These findings will lay the groundwork for a broader exploration of how geometry influences reverse flow in liquid diodes. Furthermore, a comprehensive understanding of these factors is essential for optimizing the performance of liquid diodes, especially when integrated into 2D networks[3]. When such networks are subject to a global compressive force, diodes can locally break, resulting in reverse flow. This local effect can, in turn, affect the flow in the whole network.
[1] C. Sammartino, M. Rennick, H. Kusumaatmaja, and B.-E. Pinchasik, “Three-dimensional printed liquid diodes with tunable velocity: Design guidelines and applications for liquid collection and transport,” Phys. Fluids, vol. 34, Nov. 2022, doi: 10.1063/5.0122281.
[2] C. Sammartino and B.-E. Pinchasik, “Liquid Zener diodes,” Mater. Horiz., vol. 11, no. 20, pp. 4925–4931, Oct. 2024, doi: 10.1039/D4MH00688G.
[3] C. Sammartino, Y. Shokef, and B.-E. Pinchasik, “Percolation in Networks of Liquid Diodes,” J. Phys. Chem. Lett., vol. 14, no. 34, pp. 7697–7702, Aug. 2023, doi: 10.1021/acs.jpclett.3c01885.