Architectural windows that smartly regulate the indoor solar irradiation are promised to economize the building energy consumption. Here, we demonstrate a method for adaptive, broadband, and highly efficient solar modulation for energy-efficient smart windows through active plasmonics in reconfigurable structures. We develop a kirigami-inspired elastomer containing plasmonic vanadium dioxide (VO₂) nanoparticles, in which the geometrical transition and the temperature-dependent localized surface plasmon resonance (LSPR) present dominant controls in ultraviolet-visible and near-infrared regions, respectively. The active LSPR control, via stretch-induced local dielectric changes is mitigated on reconfigurable metamaterials because of their unique strain distributions. This method demonstrated a desirable property in energy-efficient smart windows facilitating improved solar energy modulation (37.7%), surpassing the best-reported modulation in passive and transparent VO₂ thermochromism systems. This first attempt to integrate the plasmonics and reconfigurable structures may inspire developments in smart windows, building energy economization, as well as fundamental studies of plasmonic controls in metastructures.

可以巧妙地调节室内太阳辐射的建筑窗户有望节省建筑能耗。在这里，我们演示了一种通过可重构结构中的有源等离子体激元为节能型智能窗户提供自适应，宽带和高效太阳能调制的方法。我们开发了由激折线启发的弹性体，其中包含等离子二氧化钒（VO ₂）纳米粒子，其中几何转变和温度相关的局部表面等离振子共振（LSPR）分别在紫外可见和近红外区域占主导地位。由于可重构超材料的独特应变分布，通过拉伸引起的局部介电变化的主动LSPR控制得以缓解。该方法在节能智能窗中显示出令人满意的特性，可促进改进的太阳能调制（37.7％），超过了被动和透明VO _2中报告最好的调制热致变色系统。首次尝试将等离激元和可重构结构集成在一起，可能会激发智能窗的发展，建筑节能，以及对元结构中等离激元控制的基础研究。