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首页> 外文期刊>ACS applied materials & interfaces >Highly Flexible, Multipixelated Thermosensitive Smart Windows Made of Tough Hydrogels
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Highly Flexible, Multipixelated Thermosensitive Smart Windows Made of Tough Hydrogels

机译：高度灵活的多功能多敏智能窗户由强硬水凝胶制成

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摘要

In a cold night, a clear window that will become opaque while retaining the indoor heat is highly desirable for both privacy and energy efficiency. A thermally responsive material that controls both the transmittance of solar radiance (predominantly in the visible and near-infrared wavelengths) and blackbody radiation (mainly in the mid-infrared) can realize such windows with minimal energy consumption. Here, we report a smart coating made from polyampholyte hydrogel (PAH) that transforms from a transparency state to opacity to visible radiation and strengthens opacity to mid infrared when lowering the temperature as a result of phase separation between the water-rich and polymer-rich phases. To match a typical temperature fluctuation during the day, we fine-tune the phase transition temperature between 25 and 55 degrees C by introducing a small amount of relatively hydrophobic monomers (0.1 to 0.S PAH). To further demonstrate actively controlled, highly flexible, and high-contrast smart window, we build in an array of electric heaters made of printed elastomeric composite. The multipixelated window offers rapid switching, similar to 70 s per cycle, whereas the device can withstand high strain (up to 80%) during operations.
机译：在一个寒冷的夜晚，一个清晰的窗口，在保持室内热量的同时，非常适合隐私和能量效率。控制太阳辐射透射率的热响应材料（主要在可见和近红外波长）和黑体辐射（主要在中红外线）中可以实现具有最小能耗的窗口。在这里，我们报告了一种智能涂层，该智能涂层由多聚酰胺水凝胶（PAH）制成，其从透明状态转变为不透明度，以可见辐射，并在降低水中降低温度和富含水中的相分离的结果时增强不透明度。阶段。为了匹配当天的典型温度波动，通过引入少量相对疏水的单体（0.1至0.spah）微调25和55℃之间的相变温度。为了进一步展示积极控制，高度灵活和高对比度的智能窗口，我们建立在由印刷弹性体复合材料制成的一系列电加热器中。多缀合窗口提供快速切换，类似于每周期70秒，而设备可以在操作期间承受高应变（高达80％）。

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