超材料中“波-物质”互作用使电磁波能与机械能产生高效耦合，实现电磁波和机械结构联动调控，据此可发展出光机械超材料技术研究新方向，并推动超材料广泛用于频率源、传感、导航等技术领域。目前光机械超材料存在光机械耦合效率低、功耗大等问题，并缺乏在微波毫米波频段的合成方法，极大地限制了其发展与应用。本项目旨在突破基于柔性介质的微波毫米波频段光机械超材料合成机理、设计方法、制备技术、应用途径及方案。项目综合应用电动力学、结构力学、热学理论及多物理场耦合理论，研究基于柔性介质的光机械超材料能量耦合机理及控制途径，建立光机械强耦合关系模型，分析光机械超材料高Q值电磁谐振、机械振荡特性，设计微波毫米波频段低功耗光机械超材料，实验研究其光机械冷却/放大/振荡/诱导透明等物理现象，探索光机械超材料在新型微波毫米波电路、器件与高精度传感等领域的应用技术方案，最终形成微波毫米波频段光机械超材料研究与应用技术体系。

The “wave-matter” interactions in metamaterials can realize the high-efficiency energy coupling between electromagnetic waves and structural mechanics, and can be used to control simultaneously the incident electromagnetic waves and the mechanical micro-structures, opening a new research direction named optomechanical metamaterials and having the opportunity for the applications of frequency source generation, sensing and navigation. However, the currently reported optomechanical metamaterials suffer from the low opto-mechanical coupling rate and high power consumption problems, and lake of composing methods for microwave and millimeter wave ranges, which have been the barriers for the developments and practical applications. This Proposal is aim to investigate systemically the realization mechanisms, design methods and fabrication technologies, applications of a new kind of optomechanical metamaterial based on the flexible substrate operated at microwave and millimeter wave ranges. By using electrodynamics theory, structural mechanics theory, thermal theory, and the multi-physical coupling theory, this Proposal will theoretically analyze the opto-mechanical coupling mechanism and controlling method of the proposed optomechanical metamaterial based on the flexible substrate, and establish the high opto-mechanical coupling relationship model. The Proposal will also investigate the modelling method for the high-Q electromagnetic resonance and mechanical oscillation characteristics of the optomechanical metamaterials. The Proposal will then design and fabricate the low-cost optomechanical metamaterials operated at microwave and millimeter waves, and experientially investigate the optomechanical cooling, amplification, oscillation, induced transparency, etc. The Proposal finally explore the applications of optomechanical metamaterials in microwave and millimeter wave circuit/components and sensors. After achieving the research goals, the Proposal will develop and build the research and application frames for the novel optomechanical metamaterials. It has very important scientific meaning and significant engineering values.