Holographic optical elements (HOEs) are essential in augmented reality (AR) displays, providing benefits such as design flexibility and improved optical efficiency. However, current materials’ limited refractive index modulation hampers performance, particularly in achieving a broader field of view and increased brightness. Holographic optical elements (HOEs) are essential in augmented reality (AR) displays, providing benefits such as design flexibility and improved optical efficiency. However, current materials’ limited refractive index modulation hampers performance, particularly in achieving a broader field of view and increased brightness. Nanomaterials Phys.org – latest science and technology news stories