A few days ago, researchers at Harvard University took inspiration from tears to design a liquid membrane bionic material with self-adjusting functions of transparency and wettability. The beauty of this system is its adaptability and versatility. The research results were published online in the latest issue of Nature Materials.
The inspiration for this new material is inspired by a dynamic, self-healing natural system-a liquid film covering the eyes. The tears are connected to form a dynamic liquid film with significant optical function and keep clear, while keeping the eyes moist, free from dust and bacteria, and helping to discharge various wastes. And "getting it" all in a blink of an eye.
The new material is a continuous liquid film covered with an elastic porous substrate. Any deformation of the substrate, such as stretching, poke, or swelling, can change the size of the pores, thereby changing the surface shape of the liquid.
The researchers demonstrated the adaptability and multi-functional performance of the liquid film through video. The water or oil dripping onto the surface will flow freely downward. Stretching or bending will make the surface of the liquid film rough and opaque, so that the movement of water or oil droplets can be controlled more accurately. Each drop of oil or water can be moved in a reverse direction, or it can stay in a certain position, and no material before Make it happen. The current adaptive materials can only switch between hydrophobic and hydrophilic states to switch wettability.
The researchers said that the new material can dynamically control the transparency and wettability of the liquid with extremely high precision, and can also respond to and adjust the small changes in various morphologies on its surface. It can also be designed to be porous Massive elastic solids in order to respond to changes in temperature, light, magnetic or electric fields, chemical signals, pressure, and other environmental conditions.
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