纳米金属光栅上的表面等离子体共振(SPR)对临近材料折射率变化敏感，因此通过改变临近材料折射率，可以实现纳米金属光栅透射光谱的颜色调制进而用于显示器件，该调制器具有结构简单、色度和对比度高等特点。通过仿真设计实现了红绿蓝三个子像素的透射彩色显示。实验制备了周期为520 nm、铝厚度为50 nm 的双层金属光栅，并通过改变光栅临近材料折射率，实现了空气中为绿色亮态显示、蔗糖溶液中为暗态显示的效果，明暗对比度达到122。从理论和实验两方面证明了基于金属光栅结构的彩色显示和亮度调节的可行性，为未来电浸润显示器件提供了新的设计方案。

Metallic nanowire gratings have great potential to be used in display devices attributing to the unique surface plasmon resonant color shift by changing the refractive index of the ambient media. The modulator has the advantages of simple structure, high chromaticity and contrast, etc. Three pitches of bilayer metallic nanowire gratings with red, green and blue colors are respectively designed by simulation. In the experiment, the gratings with a pitch of 520 nm and an aluminum thickness of 50 nm are fabricated. The switching from bright green color state to dark state is achieved by changing the ambient medium from air to sucrose solution, and the contrast can reach 122. The feasibility of color display and adjustable brightness is verified theoretically and experimentally, which provides a new design scheme for the electro-wetting display devices in the future.