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Transparent superhydrophobic surfaces for applications of controlled reflectance

机译：透明的超疏水表面，可控制反射率

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This work involves a new optical application for transparent superhydrophobic materials, which enables low-energy optical contact between a liquid and solid surface. The new technique described here uses this surface property to control the reflectance of a surface using frustration of total internal reflection. Surface chemistry and appropriate micro-scale and nano-scale geometries are combined to produce interfaces with low adhesion to water and the degree to which incident light is reflected at this interface is controlled by the movement of water, thereby modifying the optical characteristics at the interface. The low adhesion of water to superhydrophobic surfaces is particularly advantageous in imaging applications where power use must be minimized. This paper describes the general approach, as well as a proof-of-principle experiment in which the reflectance was controlled by moving a water drop into and out of contact with a superhydrophobic surface by variation of applied electrostatic pressure.
机译：这项工作涉及透明超疏水材料的一种新的光学应用，该技术可实现液体和固体表面之间的低能光学接触。此处描述的新技术使用这种表面特性，通过抑制内部全反射来控制表面的反射率。将表面化学以及适当的微米级和纳米级几何形状结合在一起，以产生对水的粘附力低的界面，并且入射光在该界面上的反射程度受水的运动控制，从而改变了界面处的光学特性。水对超疏水表面的低附着力在必须尽量减少用电的成像应用中特别有利。本文介绍了一般方法以及原理验证实验，在该实验中，通过改变所施加的静电压力，使水滴进入与超疏水表面的接触和脱离接触，从而控制反射率。

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