Graphene-Based Adaptive Thermal Camouflage
Graphene-Based Adaptive Thermal Camouflage
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DOI：
10.1021/acs.nanolett.8b01746
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发表时间：
2018-07-01
期刊：
影响因子：
10.8
通讯作者：
Kocabas, Coskun
中科院分区：
文献类型：
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作者：
Salihoglu, Omer;Uzlu, Hasan Burkay;Kocabas, Coskun
在自然界中，自适应着色已被有效地用于隐藏和信号传递。各种生物机制已经进化到调整可见光和紫外光的反射率。这些例子激发了许多模仿自适应着色的人工系统，以使视觉外观与周围环境相匹配。然而，热伪装一直是一个突出的挑战，需要能够控制从表面发射的热辐射。在这里，我们报告了一类新的主动热表面能够有效的实时电子控制的热发射在整个红外（IR）光谱，而不改变表面的温度。我们的方法依赖于通过非挥发性离子液体的可逆嵌入来电调制多层石墨烯的红外吸收率和发射率。所展示的设备重量轻（30 g/m2）、薄（
In nature, adaptive coloration has been effectively utilized for concealment and signaling. Various biological mechanisms have evolved to tune the reflectivity for visible and ultraviolet light. These examples inspire many artificial systems for mimicking adaptive coloration to match the visual appearance to their surroundings. Thermal camouflage, however, has been an outstanding challenge which requires an ability to control the emitted thermal radiation from the surface. Here we report a new class of active thermal surfaces capable of efficient real-time electrical control of thermal emission over the full infrared (IR) spectrum without changing the temperature of the surface. Our approach relies on electro-modulation of IR absorptivity and emissivity of multilayer graphene via reversible intercalation of nonvolatile ionic liquids. The demonstrated devices are light (30 g/m(2)), thin (