Rui Zhe Jiang, Chuan Kui Shen, Hui Dong Li, Qun Yan Zhou, Zhi Hui Fu, Zheng Xing Wang, Terry Tao Ye, Jun Yan Dai, Lie Kun Yang, Jitong Ma, Qiang Cheng, Tie Jun Cui
New-generation windows require advanced multi-physics modulation capability to accommodate diverse functions, including optical transparency, thermal insulation, and wireless communication compatibility. In response to these demands, metasurfaces have emerged as a promising solution owing to their versatile and energy-efficient electromagnetic (EM) wave manipulations. However, the existing prototypes suffer from fixed functionalities and limited intelligence, restricting their practicality and sustainability. Here, we show a green-smart window based on programmable metasurface to simultaneously achieve high visible transparency, low infrared (IR) emissivity, and reconfigurable EM responses. By integrating a compact RFID (radio frequency identification) tag, three intelligent functions are remotely reconfigured in a self-powering manner: EM transmission enhancement, selective EM shielding, and polarization filtering. For verification, a prototype is fabricated to validate its visible-IR-EM multi-physics controls, remote-sensing range, self-powering capability, and thermal management. Indoor-to-indoor (I2I) and outdoor-to-indoor (O2I) communication scenarios are established, demonstrating significant improvement in communication quality by using the green-smart window.