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Self‐Sustaining 3D Thin Liquid Films in Ambient Environments
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2020-03-11 , DOI: 10.1002/admi.201901887 Ryan M Camacho 1 , Davin Fish 1 , Matthew Simmons 1 , Parker Awerkamp 1 , Rebecca Anderson 1 , Stephanie Carlson 1 , Joshua Laney 1 , Matthew Viglione 1 , Gregory P Nordin 1
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2020-03-11 , DOI: 10.1002/admi.201901887 Ryan M Camacho 1 , Davin Fish 1 , Matthew Simmons 1 , Parker Awerkamp 1 , Rebecca Anderson 1 , Stephanie Carlson 1 , Joshua Laney 1 , Matthew Viglione 1 , Gregory P Nordin 1
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Thin liquid films (TLF) have fundamental and technological importance ranging from the thermodynamics of cell membranes to the safety of light‐water cooled nuclear reactors. The creation of stable water TLFs, however, is very difficult. In this paper, the realization of thin liquid films of water with custom 3D geometries that persist indefinitely in ambient environments is reported. The wetting films are generated using microscale “mounts” fed by microfluidic channels with small feature sizes and large aspect ratios. These devices are fabricated with a custom 3D printer and resin, which are developed to print high resolution microfluidic geometries. By modifying the 3D‐printed polymer to be hydrophilic and taking advantage of well‐known wetting principles and capillary effects, self‐sustaining microscale “water fountains” are constructed that continuously replenish water lost to evaporation while relying on surface tension to stabilize their shape. To the authors' knowledge, this is the first demonstration of stable sub‐micron thin liquid films (TLFs) of pure water on curved 3D geometries.
中文翻译：
环境中自持 3D 液体薄膜
液体薄膜（TLF）具有从细胞膜热力学到轻水冷却核反应堆安全性的基础和技术重要性。然而，创建稳定的水 TLF 非常困难。在本文中，报告了实现具有自定义 3D 几何形状的水薄膜，该水薄膜可以在周围环境中无限期地持续存在。润湿膜是使用由具有小特征尺寸和大纵横比的微流体通道供给的微型“安装座”生成的。这些设备由定制 3D 打印机和树脂制成，用于打印高分辨率微流体几何形状。通过将 3D 打印聚合物修改为亲水性，并利用众所周知的润湿原理和毛细管效应，构建了自维持微型“喷泉”，可以持续补充蒸发损失的水分，同时依靠表面张力来稳定其形状。据作者所知，这是纯水在弯曲 3D 几何形状上稳定的亚微米液膜 (TLF) 的首次演示。
更新日期：2020-03-11
中文翻译：
环境中自持 3D 液体薄膜
液体薄膜（TLF）具有从细胞膜热力学到轻水冷却核反应堆安全性的基础和技术重要性。然而，创建稳定的水 TLF 非常困难。在本文中，报告了实现具有自定义 3D 几何形状的水薄膜，该水薄膜可以在周围环境中无限期地持续存在。润湿膜是使用由具有小特征尺寸和大纵横比的微流体通道供给的微型“安装座”生成的。这些设备由定制 3D 打印机和树脂制成，用于打印高分辨率微流体几何形状。通过将 3D 打印聚合物修改为亲水性，并利用众所周知的润湿原理和毛细管效应，构建了自维持微型“喷泉”，可以持续补充蒸发损失的水分，同时依靠表面张力来稳定其形状。据作者所知，这是纯水在弯曲 3D 几何形状上稳定的亚微米液膜 (TLF) 的首次演示。
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