浸没式气体截留微纹理的定向润湿
Directional Wetting of Submerged Gas-entrapping Microtextures
AI总结：
该研究追踪一维与二维微纹理阵列中截留气体的润湿转变，揭示由外向内的方向性填充机制及间距、密度、维度和压力的影响。
摘要：
当粗糙或图案化表面被浸没于水下时，许多自然和工业过程都会自发截留气体或空气。随着润湿转变发生，气体扩散到水中，最终形成完全被水填充的状态。然而，标准润湿模型并未考虑微纹理的形貌。换言之，目前尚不清楚以一维线状或二维（圆形或方形）晶格排列的n个空腔，其寿命是否与单个零维空腔相同。为此，我们追踪了截留在一维和二维晶格中的气穴随时间变化的命运，并将其与相应零维空腔中的润湿转变进行比较。有趣的是，一维和二维阵列中的润湿转变具有方向性：最外层空腔中的气体最先流失，而最内层空腔最后被水填充。本质上，微纹理的空间组织为最内层空腔的气体流失提供了屏蔽作用，我们将其作为微纹理间距、表面密度、维度和静水压力的函数进行了探究。这些发现增进了我们对微纹理中润湿转变的认识，并启发了可保护电子设备免受液体侵入的表面纹理设计。
英文摘要：
Numerous natural and industrial processes entail the spontaneous entrapment of gas/air as rough/patterned surfaces are submerged under water. As the wetting transitions ensue, the gas diffuses into the water leading to the fully-water-filled state. However, the standard models for wetting do not account for the microtexture's topography. In other words, it is not clear whether the lifetime of n cavities arranged in a I-D line or a II-D (circular or square) lattice would be the same or not as a single 0-D cavity. In response, we tracked the time-dependent fates of gas pockets trapped in I-D and II-D lattices and compared them with wetting transitions in commensurate 0-D cavities. Interestingly, the wetting transitions in the I-D and the II-D arrays had a directionality such that the gas from the outermost cavities was lost the first, while the innermost got filled by water the last. In essence, microtexture's spatial organization afforded shielding to the loss of the gas from the innermost cavities, which we probed as a function of the microtexture's pitch, surface density, dimensionality, and hydrostatic pressure. These findings advance our knowledge of wetting transitions in microtextures, and inspiring surface textures to protect electronic devices against liquid ingression.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
