Sculpting Liquids with Ultrathin Shells
Sculpting Liquids with Ultrathin Shells
复制标题
用超薄外壳雕刻液体
DOI：
10.1103/physrevlett.127.108002
复制
发表时间：
2021
影响因子：
8.6
通讯作者：
Paulsen, Joseph D.
中科院分区：
文献类型：
--
作者：
Timounay, Yousra;Hartwell, Alexander R.;He, Mengfei;King, D. Eric;Murphy, Lindsay K.;Démery, Vincent;Paulsen, Joseph D.
薄的弹性薄膜可以自发地附着在液体界面上，为定制其物理、化学和光学特性提供了一个平台。目前对薄膜弹性毛细管的理解主要是基于对平面薄片的研究。我们表明，弯曲的壳可以用不同的方式来操纵界面。我们用实验和理论阐明了一个具有消失弯曲刚度的超薄壳在液体表面施加其自身静止形状的制度。从概念上讲，通过界面的压力使外壳“膨胀”成其原始形状。该装置适用于光学应用，因为外壳是透明的，没有皱纹，并且可以在一系列曲率上制造。
Thin elastic films can spontaneously attach to liquid interfaces, offering a platform for tailoring their physical, chemical, and optical properties. Current understanding of the elastocapillarity of thin films is based primarily on studies of planar sheets. We show that curved shells can be used to manipulate interfaces in qualitatively different ways. We elucidate a regime where an ultrathin shell with vanishing bending rigidity imposes its own rest shape on a liquid surface, using experiment and theory. Conceptually, the pressure across the interface “inflates” the shell into its original shape. The setup is amenable to optical applications as the shell is transparent, free of wrinkles, and may be manufactured over a range of curvatures.