Bubble manipulation mediated by external stimuli: From bioinspired design to potential applications

Liu, Danna; Wang, Yixuan; Chen, Wei; Tian, Ye; Zhang, Feilong; Wang, Shutao; Meng, Jingxin

doi:10.1016/j.nantod.2024.102177

Cited by 2 publications

(2 citation statements)

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“…The capillary pressure difference of SHMs with different structural dimensions can be used to achieve selective gas transport. 56,57 As shown in Figure 4a 4b), when a small quantity of gas exists in the middle of the two surfaces, the gas will preferentially spread toward the 200-SHM. As depicted in Figure 4c, upon injecting gas at the junction of the 100-SHM and the 200-SHM, the gas quickly spreads on the surface of 200-mesh SHM, while there is minimal gas spreading on the 100-mesh SHM as shown in Movie S6.…”

Section: ■ Results and Discussionmentioning

confidence: 97%

“…The capillary pressure difference of SHMs with different structural dimensions can be used to achieve selective gas transport. , As shown in Figure a, two rectangular SHMs with mesh numbers of 100 (referred to as 100-SHM, D = 80 μm, W = 180 μm) and 200 (referred to as 200-SHM, D = 53 μm, W = 70 μm) are joined tightly along their shorter edges. Due to the larger capillary forces generated by the 200-SHM (Figure b), when a small quantity of gas exists in the middle of the two surfaces, the gas will preferentially spread toward the 200-SHM.…”

Section: Resultsmentioning

confidence: 99%

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Self-Driven Gas Spreading on Mesh Surfaces for Regeneration of Underwater Superhydrophobicity

Wang,

Liu

2024

ACS Appl. Mater. Interfaces

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Underwater superhydrophobic surfaces stand as a promising frontier in technological applications such as drag reduction, antifouling, and anticorrosion. Unfortunately, the air film, known as the plastron, on these surfaces tends to be unstable. To address this problem, active approaches have been designed to preserve or restore plastrons. In this work, a self-driven gas spreading superhydrophobic mesh (SHM) surface is designed to facilitate recovery of the plastron. The immersed SHM can be "wetted" by gas, even when the plastron is removed. We demonstrate that the injected gas can spread spontaneously along the SHM over a large area, which greatly simplifies the plastron replenishment process. By incorporating a locally coated gas-producing layer, we achieve rapid in situ plastron recovery and long-term immersion stability, extending the plastron lifespan by at least 48 times. We also provide a framework for designing an SHM with suitable structural dimensions for gas spreading. Furthermore, an SHM with asymmetric structural dimensions enables unidirectional gas transport by the capillary pressure difference. This SHM surface shows excellent drag reduction properties (37.2%) and has a high slip recovery coefficient (73.4%) after plastron loss. This facile and scalable method is expected to broaden the range of potential applications involving nonwetting-related fields.

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Section: ■ Results and Discussionmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%