%0 Journal Article %T Assembling Nano-Microarchitecture for Electromagnetic Absorbers and Smart Devices. %A Wang XX %A Cao WQ %A Cao MS %A Yuan J %J Adv Mater %V 32 %N 36 %D Sep 2020 %M 32686195 %F 32.086 %R 10.1002/adma.202002112 %X Smart devices, nowadays, are inspiring the infinite vitality and possibilities of intelligent life, such as self-power electromagnetic (EM) nanogenerator and microsensor, smart window, thermally-driven EM absorber, interstellar energy deliverer, and so on. Herein, the latest and most impressive works of 3D nano-micro architectures and their smart EM devices are highly focused on. The most key information, including assembly strategy and mechanism, EM response, and approach-structure-function relationship, is extracted and well-organized with profundity and easy-to-understand approach. The merit and demerit are revealed by comparison. What's more, the brightest and most cutting-edge smart EM devices constructed by 3D nano-micro architectures are reported as highlights, and the device principles are deeply dissected. Finally, a profound and top comment on the fast-growing field as well as challenges are proposed, and the future directions are predicted intelligently.